0:00:24 > 0:00:30'He's Dr Chris and he's Dr Xand. Yep, we're twins.
0:00:30 > 0:00:34'Do you know just how brilliant your body really is?
0:00:34 > 0:00:37'Well, now's the time to find out.
0:00:37 > 0:00:40'We'll be uncovering the ins and outs of what you're made of.'
0:00:40 > 0:00:42There's a big cut there.
0:00:43 > 0:00:45'We'll be doing awesome experiments...'
0:00:47 > 0:00:48Oh, Chris, that's awful!
0:00:50 > 0:00:53'..as we push our own bodies to the limits...'
0:00:53 > 0:00:55- OK, here we go.- Ooohhhh!
0:00:55 > 0:00:57HE CHUCKLES
0:00:57 > 0:01:01'..to show you all the incredible things your body can do.'
0:01:01 > 0:01:03Oh, no!
0:01:03 > 0:01:06'Hang around, because this is going to be fun.'
0:01:08 > 0:01:10BOTH: Coming up today on Operation Ouch...
0:01:12 > 0:01:16'This hungry man hides an amazing body ability,
0:01:16 > 0:01:19'Chris joins paramedics at the scene of an emergency...'
0:01:19 > 0:01:22There are an awful lot of different causes for tummy pains,
0:01:22 > 0:01:25some of them very, very serious.
0:01:25 > 0:01:28'..and Xand takes the plunge to show you how tough your skin is.'
0:01:28 > 0:01:30Ohhhh!
0:01:30 > 0:01:31'But now...'
0:01:31 > 0:01:33We're giving you exclusive access
0:01:33 > 0:01:35to an Accident and Emergency department.
0:01:35 > 0:01:37Let's meet our first patient.
0:01:41 > 0:01:43'In Manchester, 11-year-old Akrima
0:01:43 > 0:01:45'has come into hospital wearing a sling.'
0:01:45 > 0:01:47Think I've broken my arm.
0:01:47 > 0:01:49'Well, you're in the right place to find out.
0:01:49 > 0:01:53'But first, how did it happen? Akrima was at school.
0:01:53 > 0:01:56'It was PE, and everyone was doing gymnastics,
0:01:56 > 0:01:59'and he was getting ready to make a champion move.
0:02:01 > 0:02:04'Feeling like an Olympic pro, Akrima ran towards a bench,
0:02:04 > 0:02:08'jumped high into the air and landed on both feet.
0:02:08 > 0:02:09'It was a perfect ten.
0:02:09 > 0:02:12'But suddenly, he lost his balance and fell right over,
0:02:12 > 0:02:15'right onto his arm. Ouch!
0:02:15 > 0:02:17'Well, at least it doesn't look that badly hurt.
0:02:17 > 0:02:19'Ah, right. It's THAT arm.
0:02:19 > 0:02:20'Yep, that doesn't look good.
0:02:20 > 0:02:23'Luckily, Dr Nicola Penrose is on hand to help.'
0:02:25 > 0:02:27Ahhh, that's a bit bendy, isn't it, that arm?
0:02:27 > 0:02:30Just having a quick glance underneath the sling
0:02:30 > 0:02:32that he's got on, it looks like his arm's...
0:02:32 > 0:02:34well, the wrong shape, really.
0:02:34 > 0:02:38It's bendy. His arm's what we're calling a banana arm.
0:02:38 > 0:02:39'Did she say...'
0:02:39 > 0:02:40Banana arm.
0:02:40 > 0:02:43'Wow! Akrima's got a banana arm.'
0:02:43 > 0:02:47Where my arm's nice and straight, his arm's sort of going that way
0:02:47 > 0:02:50a little bit. There's a bit of a sag in the middle of it, where it
0:02:50 > 0:02:52looks like he might have broken a bone or something.
0:02:52 > 0:02:57'Time to find out for sure. It's off to X-ray, and there it is.
0:02:57 > 0:02:59'Yep, definitely banana-ey!'
0:03:01 > 0:03:03There you go. All done.
0:03:03 > 0:03:05'Over to Dr Nicola to tell us what they found.'
0:03:05 > 0:03:09He's broken both the bones in his forearm, basically.
0:03:09 > 0:03:10'Wow! A double whammy.'
0:03:10 > 0:03:13So these bones should be nice and straight
0:03:13 > 0:03:16and all pointing in the same direction, but they're not.
0:03:16 > 0:03:19They're bendy and they're snapped in the middle.
0:03:19 > 0:03:20'That is one impressive X-ray.
0:03:20 > 0:03:24'But what's even more impressive is how it looks in real life.'
0:03:24 > 0:03:29And this arm goes "whooo", doesn't it? It's all bendy there.
0:03:29 > 0:03:33'Now, the type of break Akrima has will require an operation to fix it,
0:03:33 > 0:03:36'otherwise the bones won't set in a normal position.
0:03:36 > 0:03:39'And we don't want him to have that banana arm for ever.'
0:03:39 > 0:03:41They told me if I don't get it fixed
0:03:41 > 0:03:43and it heals like this,
0:03:43 > 0:03:46I won't be able to turn my hand and use my hand.
0:03:46 > 0:03:49'Well, Akrima doesn't look too happy, but that operation means
0:03:49 > 0:03:51'he'll have a fully functioning arm.
0:03:51 > 0:03:54'We'll be back later to see how he gets on.
0:03:59 > 0:04:03'This is our lab, where we're going to put our bodies to the test to
0:04:03 > 0:04:06'show you how your body works.'
0:04:06 > 0:04:07Ow! That really hurt!
0:04:07 > 0:04:10'Just don't try anything you see here at home.
0:04:10 > 0:04:12'Today, we're looking at our skin.
0:04:14 > 0:04:15'The largest organ in our body,
0:04:15 > 0:04:19'skin is one big protective barrier against the universe.
0:04:20 > 0:04:23'It protects us from overheating by making us sweat,
0:04:23 > 0:04:26'and protects us from the cold by creating goosebumps
0:04:26 > 0:04:28'that trap a layer of warm air around us.
0:04:28 > 0:04:31'But if you've ever spent too long in the bath, you'll have noticed
0:04:31 > 0:04:34'something else about your skin.'
0:04:34 > 0:04:36Wrinkly fingers.
0:04:36 > 0:04:39Now, the reason that happens is because your skin is covered
0:04:39 > 0:04:41in a protective layer of dead cells.
0:04:41 > 0:04:44When these get wet, they can absorb water and swell.
0:04:44 > 0:04:46Now, these dead cells are constantly being replaced.
0:04:46 > 0:04:49'New cells are born all the time.
0:04:49 > 0:04:53'They rise from the lower part of your skin to the top until they die.
0:04:53 > 0:04:57'It's those dead cells that you can see on Xand's wrinkly fingers.
0:04:57 > 0:05:01'But even though you go wrinkly in the bath, you don't keep soaking up
0:05:01 > 0:05:03'water like a sponge, and that's because your skin
0:05:03 > 0:05:07'is full of natural oils which repel the water away.
0:05:07 > 0:05:10'Those oils aren't the only way your skin repels danger,
0:05:10 > 0:05:12'as we're about to show you.'
0:05:12 > 0:05:14This is liquid nitrogen.
0:05:15 > 0:05:18'It's nearly minus 200 degrees Celsius, which makes it
0:05:18 > 0:05:22'one of the coldest things on Earth and a very dangerous substance.'
0:05:36 > 0:05:37My flowers!
0:05:37 > 0:05:40'Ah, yes. Sorry, Xand. The liquid nitrogen is so cold
0:05:40 > 0:05:43'that it's frozen the water in the flowers,
0:05:43 > 0:05:46'so let's see what happens when Xand dips his hand into it.'
0:05:46 > 0:05:48Did you not see what happened to the flowers?
0:05:48 > 0:05:50But your hands aren't flowers.
0:05:50 > 0:05:52That's true, actually. I should be able to do this,
0:05:52 > 0:05:54although I haven't done it before.
0:05:56 > 0:05:58'OK. Here goes!'
0:06:00 > 0:06:03- Aw! It's amazing!- Was that cold?
0:06:03 > 0:06:06It stings, and you can feel it's very cold.
0:06:06 > 0:06:09'So how come Xand's hand didn't crumble like the flowers?'
0:06:09 > 0:06:13I'm warm at the moment, so my body's pumping hot blood to my hand.
0:06:13 > 0:06:16And that hot blood boils the liquid nitrogen away from my skin
0:06:16 > 0:06:18and prevents it from injuring me.
0:06:18 > 0:06:20And you can see that on the back of my hand.
0:06:20 > 0:06:24The big veins full are of hot blood and they'll protect me. Ready?
0:06:27 > 0:06:31It DOES sting. It DOES sting but, you know, I'm OK.
0:06:31 > 0:06:34'So the hot blood in my skin repels the liquid nitrogen
0:06:34 > 0:06:37'away from my hand, stopping it from freezing.
0:06:37 > 0:06:40So what we've seen is that your skin isn't just needed to
0:06:40 > 0:06:41keep your insides in.
0:06:41 > 0:06:45'It's an amazing organ which protects your body from the dangers
0:06:45 > 0:06:49'of extreme heat or cold, making sure your body temperature remains
0:06:49 > 0:06:52'constant and keeping you safe from harm.'
0:06:55 > 0:06:57If you're in need of medical help fast...
0:06:57 > 0:07:00..there are teams of paramedics near you, ready to assist.
0:07:01 > 0:07:04'We're going on call with the UK's emergency services,
0:07:04 > 0:07:07'heading into the thick of the action to help save lives.'
0:07:07 > 0:07:10'Now it's Chris's turn on the front line.'
0:07:10 > 0:07:12Paramedics who drive these are on call 24/7,
0:07:12 > 0:07:16always ready for extreme medical emergencies.
0:07:19 > 0:07:22'On call with me today is paramedic Ben White.
0:07:22 > 0:07:26'We're in the rapid response vehicle and a new call has just come in.'
0:07:26 > 0:07:31We've been called to a woman with abdominal pain, that's tummy pain.
0:07:31 > 0:07:33There are an awful lot of different causes for tummy pain,
0:07:33 > 0:07:35some of them very, very serious,
0:07:35 > 0:07:37some of them not very serious at all.
0:07:37 > 0:07:40So while Ben drives at high speed through traffic, we're also
0:07:40 > 0:07:43trying to think about what some causes might be
0:07:43 > 0:07:45and what we'll do when we get there.
0:07:45 > 0:07:49'Thinking ahead like this means that we'll be ready to act quickly
0:07:49 > 0:07:50'when we arrive.'
0:07:50 > 0:07:53James has got his camera and I've got my camera,
0:07:53 > 0:07:55so I can get you right to the heart of the action.
0:07:57 > 0:08:00'When we get to the scene, our patient, Katie, is clearly
0:08:00 > 0:08:04'upset from the pain in her tummy, and her mum is there to support her.
0:08:04 > 0:08:07'Katie has had pain in her abdomen on and off for a while,
0:08:07 > 0:08:10'so Ben begins a thorough examination.'
0:08:13 > 0:08:18- Nothing. No.- When did it get... when the did pain get this bad?
0:08:18 > 0:08:20- Midday today.- Midday today? OK.
0:08:20 > 0:08:24You can have as much of that as you like. Just nice, deep breaths.
0:08:26 > 0:08:28'Because Katie's in a lot of pain,
0:08:28 > 0:08:31'Ben is giving her gas and air to make her more comfortable
0:08:31 > 0:08:34'while he continues his examination.'
0:08:34 > 0:08:38- Is the pain always in the same place when you get it?- Yeah.
0:08:38 > 0:08:41- Does it come on suddenly? - It builds up.
0:08:41 > 0:08:44'This device monitors the oxygen in Katie's blood
0:08:44 > 0:08:48'and her heart rate, through the pulse in her finger.
0:08:48 > 0:08:50'The pulse readings have been high, which isn't good,
0:08:50 > 0:08:55'but the pain relief is bringing things back to normal now.'
0:08:55 > 0:08:58Katie's pulse rate, as Ben says, has gone from 115...
0:08:58 > 0:09:00It's about 140, initially.
0:09:00 > 0:09:02- It's at 140?- 140 initially, when she came in.- Right.
0:09:02 > 0:09:06It's gone from 140, so very high, as high as if you went for a run,
0:09:06 > 0:09:08now down to 105 to 110.
0:09:08 > 0:09:11It's easing it a little bit. You seem a lot calmer now.
0:09:11 > 0:09:14'Although Katie is already feeling more comfortable,
0:09:14 > 0:09:17'Ben calls for an ambulance to take her to hospital
0:09:17 > 0:09:18'for the treatment she needs.
0:09:18 > 0:09:22'So the gas and air has worked and has numbed her pain.'
0:09:22 > 0:09:23It's an amazing transformation.
0:09:23 > 0:09:27When I arrived Katie was in tears in the hallway, unable to sit down
0:09:27 > 0:09:30because if she moved, the pain was really, really intense.
0:09:30 > 0:09:34And Ben came in, calmed her down, has given her the gas and air.
0:09:34 > 0:09:37She's now sitting comfortably, her pulse has fallen enormously,
0:09:37 > 0:09:40along with her blood pressure, and that's a really good sign.
0:09:40 > 0:09:43'The ambulance team arrive to take Katie to hospital,
0:09:43 > 0:09:45'where they'll be able to run more detailed tests
0:09:45 > 0:09:47'and give her further treatment.'
0:09:47 > 0:09:50So we turned up to find Kate, who's 25 years old, standing
0:09:50 > 0:09:53in her hallway, in tears from pain from her problem.
0:09:53 > 0:09:55And although Ben can't fix the problem here,
0:09:55 > 0:09:57she's now on her way to a place where it can be fixed,
0:09:57 > 0:10:00and he was able to deliver really, really good pain relief.
0:10:00 > 0:10:02'And with our job done, we hit the road again,
0:10:02 > 0:10:04'ready for the next call-out.
0:10:04 > 0:10:07'It's thanks to paramedics like Ben, who can get to a scene fast,
0:10:07 > 0:10:10'that means you'll never be more than a few minutes away
0:10:10 > 0:10:11'from medical care.
0:10:15 > 0:10:16'Still to come...
0:10:16 > 0:10:21'We've got another body trick for you to fool your friends with...'
0:10:21 > 0:10:23- That one.- CHILDREN:- Ohhh!
0:10:23 > 0:10:26'..there's a burnt foot in Accident and Emergency...'
0:10:26 > 0:10:29We can snip it and some of the juice will come out.
0:10:29 > 0:10:32'..and Chris goes on duty to find out what causes THIS.
0:10:38 > 0:10:41'That's nearly 5,500 times a year!'
0:10:41 > 0:10:43'Wow, that's amazing! And so's this.
0:10:45 > 0:10:48'This is just an ordinary town and looks like an ordinary
0:10:48 > 0:10:51'restaurant, but this is no ordinary man.
0:10:51 > 0:10:53'So what makes him so special?'
0:10:53 > 0:10:55'Is he one of those people who can eat
0:10:55 > 0:10:58'everything off the menu in one sitting?
0:10:58 > 0:11:00'No, Chris, but the food has got something to do with it.
0:11:03 > 0:11:06'In fact, this man is hiding an amazing body.
0:11:08 > 0:11:09'Wait for it!'
0:11:09 > 0:11:12HE BURPS
0:11:12 > 0:11:14'Sorry, madam!'
0:11:14 > 0:11:18'This is Paul Hunn, and he holds the world record for the loudest burp.'
0:11:18 > 0:11:23HE BURPS
0:11:23 > 0:11:27'He discovered this extraordinary talent when he was at school.'
0:11:27 > 0:11:29I used to win all the competitions in the playground,
0:11:29 > 0:11:30beat all the other kids.
0:11:30 > 0:11:33When I broke the world record, I was so proud.
0:11:33 > 0:11:36I just couldn't believe it! I didn't think that would come out of it.
0:11:36 > 0:11:39'Now we all burp, and that's because when we eat and drink,
0:11:39 > 0:11:41'we also swallow air, and it needs to come out.
0:11:41 > 0:11:44'But Paul's burps are something else.'
0:11:44 > 0:11:47HE BURPS
0:11:49 > 0:11:52'So how does he make sure his burps are as impressive as
0:11:52 > 0:11:54'they possibly can be?'
0:11:54 > 0:11:58If I'm burping, if I'm going to do an appearance or a record attempt,
0:11:58 > 0:12:01on the day, I make sure I don't eat so I can breathe more air in.
0:12:01 > 0:12:04When the time comes, I just breathe more air in.
0:12:04 > 0:12:06I let it settle at the bottom of my stomach.
0:12:06 > 0:12:10As I feel it rise, I sort of open my throat and just let rip.
0:12:10 > 0:12:13HE BURPS
0:12:16 > 0:12:20'Paul's champion burps can reach up to 109 decibels.'
0:12:20 > 0:12:22HE BURPS
0:12:25 > 0:12:26'Just look at this decibel reader.
0:12:26 > 0:12:29'That's as loud as a car horn or a motorbike.'
0:12:29 > 0:12:30CAR HORN BEEPS
0:12:30 > 0:12:32MOTORBIKE REVS
0:12:32 > 0:12:35'Nice work, Paul. Now THAT'S amazing!
0:12:39 > 0:12:40HE BURPS
0:12:41 > 0:12:43HE BURPS
0:12:43 > 0:12:44HE BURPS
0:12:44 > 0:12:47You are never going to break the world record.
0:12:47 > 0:12:49Now, remember our patient from earlier?
0:12:49 > 0:12:51Let's head back to the emergency department
0:12:51 > 0:12:53to see how they're getting along.
0:12:54 > 0:12:58'Back in Manchester is 11-year-old Akrima with a badly broken arm.
0:13:00 > 0:13:01'Akrima was in PE.
0:13:01 > 0:13:03'It was gymnastics and, feeling like a pro,
0:13:03 > 0:13:06'he took a run up towards a bench and jumped.
0:13:07 > 0:13:10'Perfect! Landed on his feet. Beautiful!
0:13:10 > 0:13:14'And then fell over and broke his arm. Really not good!
0:13:14 > 0:13:17'The broken bones have changed the shape of Akrima's arm,
0:13:17 > 0:13:20'and it's as bendy as a banana.
0:13:20 > 0:13:23'Now it's time for his operation, where specialist surgeons will
0:13:23 > 0:13:25'put his bones back in the right place.
0:13:25 > 0:13:29'So banana arm, get ready to be de-banana-fied!'
0:13:29 > 0:13:32Just some sleeping medicine now. What will you dream about?
0:13:32 > 0:13:34Where's the nicest place you can sleep?
0:13:34 > 0:13:35'France? The Caribbean?'
0:13:35 > 0:13:39- Been to Blackpool? - 'Blackpool?! OK, Blackpool it is!
0:13:39 > 0:13:42'As soon as Akrima drifts off into dreamland, the surgical
0:13:42 > 0:13:46'team will be able to get to work. And there you go!
0:13:46 > 0:13:48'He's off to the sandy shores of Blackpool.
0:13:48 > 0:13:52'To prevent Akrima's bones from healing in the wrong shape,
0:13:52 > 0:13:56'the surgeons need to move them by hand, back to where they should be.'
0:13:56 > 0:13:58We just push this part of the forearm back straight up,
0:13:58 > 0:14:01so that it lines up with this part of the forearm.
0:14:01 > 0:14:03'Remember, he won't feel a thing,
0:14:03 > 0:14:07'so on your marks, get set, and there you go!
0:14:07 > 0:14:10'A blink of an eye and the bone is back in the correct position.
0:14:10 > 0:14:14'Everything looks good, but to be sure, they do another X-ray.
0:14:14 > 0:14:15'Oh, beautiful!
0:14:15 > 0:14:17'Not a hint of banana there.
0:14:17 > 0:14:19'Now they plaster his arm in a cast
0:14:19 > 0:14:23'so that the bone stays in position to knit together.
0:14:23 > 0:14:25'A couple of hours later, Akrima is wide awake,
0:14:25 > 0:14:28'and the operation is a distant memory.
0:14:28 > 0:14:30'Actually, it's barely a memory at all.'
0:14:30 > 0:14:32I don't remember anything.
0:14:32 > 0:14:34I only remember when I woke up.
0:14:34 > 0:14:35'But it's good news.'
0:14:35 > 0:14:38I don't have the banana arm any more. It's gone.
0:14:38 > 0:14:41'You must be starving, Akrima. Fancy a banana?'
0:14:41 > 0:14:44Every time I eat a banana, I'll try not to think about my arm.
0:14:45 > 0:14:48'Maybe stick to apples and oranges for a bit. Bye!
0:14:54 > 0:14:56'We know loads of amazing body tricks.
0:14:56 > 0:14:59'This time, we're going to show you how to convince your friends
0:14:59 > 0:15:02'you can read their minds using just an ordinary penny.'
0:15:02 > 0:15:05So we're going to take this penny, and I'm going to give it to Xand.
0:15:05 > 0:15:08And he's going to put it in one of his hands, OK?
0:15:08 > 0:15:11I'm going to do this without looking.
0:15:11 > 0:15:14Now, if I can guess which of his hands he's put it in, then
0:15:14 > 0:15:16I get my penny back.
0:15:16 > 0:15:18'Now, whilst I keep looking the other way,
0:15:18 > 0:15:21'I want Xand to put the hand with the penny in it above his head.'
0:15:21 > 0:15:23Just make your hands different.
0:15:23 > 0:15:26You've just got to think really hard about the hand it's in
0:15:26 > 0:15:27and send it to my brain.
0:15:27 > 0:15:30I think I've got it. Put your hands together.
0:15:30 > 0:15:33I'm going to guess which one it is.
0:15:33 > 0:15:36- That one.- CHILDREN:- Ohh!
0:15:36 > 0:15:39Who thinks they know how he's doing it? Nathan's as keen as mustard.
0:15:39 > 0:15:43So, Nathan, come out here and tell everyone how you think it's working.
0:15:43 > 0:15:45Well, I think it's working because
0:15:45 > 0:15:47when you put your hand up into the air, your blood drains
0:15:47 > 0:15:50out of your hands, so when you put it down, it looks whiter.
0:15:50 > 0:15:54So Nathan's completely correct. If you put your hand in the air,
0:15:54 > 0:15:56there are no veins in the back of that hand now.
0:15:56 > 0:15:59Can you all see that? Look at this hand, all those veins.
0:15:59 > 0:16:02- So put them together. - Put them together. See all that?
0:16:02 > 0:16:03- Yeah.- Oh, yeah.- That one's pale.
0:16:03 > 0:16:07You can tell which hand your friend has just been holding up in the air
0:16:07 > 0:16:09because the veins won't be sticking up as much.
0:16:09 > 0:16:13That's because the blood has drained out of them.
0:16:13 > 0:16:16So give it a try and home and see if you can trick your friends.
0:16:21 > 0:16:22On Operation Ouch,
0:16:22 > 0:16:26we've been hitting the hospital wards to show you what goes on.
0:16:26 > 0:16:29Today, Chris is on duty in the allergy clinic.
0:16:29 > 0:16:33Prawns, cheese and nuts. What do these three things have in common?
0:16:33 > 0:16:37Well, obviously they're all best served dipped in chocolate.
0:16:37 > 0:16:39Apart from the nuts. That would be disgusting!
0:16:39 > 0:16:43But foods like this are also the main cause of a problem
0:16:43 > 0:16:44that some of you may have.
0:16:44 > 0:16:46I'm talking about food allergies.
0:16:47 > 0:16:51An allergy can cause the body to react in extreme ways.
0:16:51 > 0:16:54These pictures show some allergic reactions on the skin.
0:16:54 > 0:16:58But what is an allergy and why does our body do this?
0:16:58 > 0:17:02This is consultant Doctor Vibha Sharma, a specialist in allergies.
0:17:02 > 0:17:05She'll tell us everything we need to know.
0:17:05 > 0:17:07So Dr Sharma what is an allergy?
0:17:07 > 0:17:11An allergic reaction is when somebody's been given something
0:17:11 > 0:17:15that they do not agree with and their body reacts to it.
0:17:15 > 0:17:17What happens when somebody gets an allergic reaction?
0:17:17 > 0:17:23Those that are not severe will cause rashes, they might cause swelling.
0:17:23 > 0:17:27A small proportion of people can have severe allergic reactions
0:17:27 > 0:17:29and then they get very poorly.
0:17:29 > 0:17:33This is Harun who has a suspected milk allergy.
0:17:33 > 0:17:37When I have something with milk in it,
0:17:37 > 0:17:40I get a bit itchy on my body.
0:17:40 > 0:17:44And this is Hollie who has a suspected nut allergy.
0:17:44 > 0:17:47So the last time I had peanuts was when I was 18 months old
0:17:47 > 0:17:50and had an extremely big reaction to that.
0:17:50 > 0:17:53They've both come into the clinic today for allergy testing.
0:17:53 > 0:17:57We do this test that's called a challenge test.
0:17:57 > 0:18:01The allergy challenge test means that Harun and Hollie will be
0:18:01 > 0:18:05taking small bites of foods Dr Sharma thinks they are allergic to.
0:18:06 > 0:18:10They'll both be monitored closely by the medical team just in case
0:18:10 > 0:18:12they start to have an allergic reaction.
0:18:14 > 0:18:16Hollie's trying chocolate with nuts in it.
0:18:16 > 0:18:19She hasn't eaten nuts for 11 years so how's it going down?
0:18:19 > 0:18:22I've just had my first bit and so far so good.
0:18:22 > 0:18:26Harun's had one bit of pasta with milk in the sauce. How's he doing?
0:18:26 > 0:18:31It feels, erm, like I'm getting a bit itchy.
0:18:31 > 0:18:35Harun's itchy skin could be the sign of an allergy
0:18:35 > 0:18:37but nothing major is showing yet.
0:18:39 > 0:18:41Time for a second bite. Anything happening?
0:18:41 > 0:18:43Second one now and I'm still all right.
0:18:43 > 0:18:46In fact, after a few more bites of her dreaded food,
0:18:46 > 0:18:48it's good news for Hollie.
0:18:48 > 0:18:52I've had six pieces of chocolate with mixed nuts with no reaction.
0:18:52 > 0:18:56They've confirmed to me that I'm not allergic to any nuts at all.
0:18:56 > 0:18:57So it's thumbs up for Hollie.
0:18:57 > 0:19:01As you grow older, it's possible to build up a tolerance to some
0:19:01 > 0:19:04allergies so one down, one to go.
0:19:04 > 0:19:06How's Harun getting on?
0:19:06 > 0:19:10He's trying another spoonful and now an even bigger spoonful.
0:19:10 > 0:19:14The doctors are building him up to a full meal to see his reaction.
0:19:14 > 0:19:17- He's started itching a lot. - A bit itchy there?
0:19:17 > 0:19:20And this is definitely an allergic reaction.
0:19:20 > 0:19:24When this happens, your body releases chemicals called histamines
0:19:24 > 0:19:26and this is what makes you itch.
0:19:26 > 0:19:29The more histamines, the more severe the reaction.
0:19:29 > 0:19:33The histamines released not only make Harun itchy
0:19:33 > 0:19:37but also cause little bumps on his skin, called hives.
0:19:37 > 0:19:41These bumps are formed by fluid leaking from blood vessels in skin,
0:19:41 > 0:19:43which means one thing.
0:19:43 > 0:19:47I'm allergic to the milk in the pasta.
0:19:49 > 0:19:52We know Haran's reactions have been really bad in the past.
0:19:52 > 0:19:56He's had breathing difficulties which required a lot of treatment
0:19:56 > 0:20:00but thankfully, on this occasion, he's got this rash that alerted us
0:20:00 > 0:20:03so we're going to now stop the challenge.
0:20:03 > 0:20:07He's had the medicine and we'll observe him for a little longer
0:20:07 > 0:20:09to make sure that this reaction settles down
0:20:09 > 0:20:12and that he's not going to develop any more symptoms.
0:20:14 > 0:20:17So although the body can adapt and overcome food allergies,
0:20:17 > 0:20:19the allergy challenge has confirmed
0:20:19 > 0:20:21Harun's body is still sensitive to milk.
0:20:21 > 0:20:24He'll need to avoid eating anything with milk in it
0:20:24 > 0:20:27to make sure he doesn't have a nasty reaction in future.
0:20:54 > 0:20:55In fact the answer is A.
0:20:55 > 0:21:00There are 45 miles of nerves running through the skin on your body.
0:21:02 > 0:21:04In the Accident and Emergency department,
0:21:04 > 0:21:06the team are ready for their next case.
0:21:06 > 0:21:07Let's meet her.
0:21:12 > 0:21:15Hotfooting it into the hospital today is 14-year-old Kelsey
0:21:15 > 0:21:17with a burnt foot.
0:21:17 > 0:21:22It's like... I can't describe it, just stinging and throbbing.
0:21:22 > 0:21:24Right, let's find out what happened here.
0:21:27 > 0:21:29Kelsey was at home in the kitchen.
0:21:29 > 0:21:31She was frying up some onions for her hot dog.
0:21:31 > 0:21:33Ooh, lovely! Can I place my order?
0:21:33 > 0:21:36Double cheeseburger with extra bacon, please.
0:21:36 > 0:21:38Xand, she's making it for herself, not you!
0:21:40 > 0:21:44Anyway, with the dog safely in the bun, all she needed was the onions.
0:21:44 > 0:21:47She tipped the frying pan to add them to her delicious hot dog
0:21:47 > 0:21:48but disaster struck!
0:21:48 > 0:21:52Hot oil spilled out of the frying pan onto her foot. Ouch!
0:21:54 > 0:21:56I tried scraping it all off with a towel.
0:21:58 > 0:22:00The towel scraping didn't help matters,
0:22:00 > 0:22:04but if you get a burn like Kelsey, the best thing you can do is bathe
0:22:04 > 0:22:06the skin in cool or tepid water
0:22:06 > 0:22:08for around half an hour after the injury.
0:22:08 > 0:22:11But Professor Simon Carley comes to the rescue.
0:22:11 > 0:22:14Hi, Kelsey, come and grab a seat.
0:22:14 > 0:22:16- Poorly foot. What have you done? - I burned it.
0:22:16 > 0:22:20- How?- On a frying pan.
0:22:20 > 0:22:22Actually on the frying pan itself?
0:22:22 > 0:22:24No, I had oil in it and it spilt on my foot.
0:22:24 > 0:22:28- What were you cooking?- Onions. - Right, OK.
0:22:28 > 0:22:30Just want to pop it up on here and we'll have a quick look
0:22:30 > 0:22:32and see what we can see.
0:22:32 > 0:22:34Can I take this off and have a look?
0:22:34 > 0:22:35There it is.
0:22:35 > 0:22:38All right. What did you do, for starters?
0:22:38 > 0:22:40I tried wiping it off and it just went red
0:22:40 > 0:22:42and the next day it built up.
0:22:42 > 0:22:47This bit here has got two bits and this bit here is like sunburn
0:22:47 > 0:22:49and this bit here has got the blister.
0:22:49 > 0:22:52There's no sensation in it at all so we can take this off
0:22:52 > 0:22:55and it won't hurt and then we can put a dressing on.
0:22:55 > 0:22:58A blister is your body's own version of a plaster,
0:22:58 > 0:23:00protecting the skin underneath.
0:23:00 > 0:23:04The fluid inside Kelsey's blister contains antibodies along with
0:23:04 > 0:23:06dead cells destroyed by the burn.
0:23:07 > 0:23:12Just dead skin, this, so this little bit here doesn't really have
0:23:12 > 0:23:15any sensation in so that's the bit we'll take off.
0:23:15 > 0:23:18- Are you a watcher or a look-away-er? - A look-away-er.
0:23:18 > 0:23:20Now's the time to look away.
0:23:20 > 0:23:23We can snip it and some of the juice will come out.
0:23:25 > 0:23:28That's the juice that's been coming up from the burn.
0:23:28 > 0:23:32Professor Simon's decided to cut this blister and drain the fluid
0:23:32 > 0:23:34because it's on Kelsey's foot where it might get rubbed off
0:23:34 > 0:23:37and become infected.
0:23:37 > 0:23:40If it was elsewhere on the body, he may have left the blister alone
0:23:40 > 0:23:44because when new skin grows in, blisters just fall off on their own.
0:23:44 > 0:23:48So this is the burn that we can see here. This is nice and pink here.
0:23:48 > 0:23:50It's taken off the top layer of skin.
0:23:50 > 0:23:53It's burnt the top layer of skin away but you can see from that nice
0:23:53 > 0:23:56pinkness that this is going to be healing very nicely, actually.
0:23:56 > 0:23:59So the big issue for you is to keep it nice and clean,
0:23:59 > 0:24:01free from infection.
0:24:02 > 0:24:06Burns, especially hot oil burns, can be very serious
0:24:06 > 0:24:08but Kelsey's had a lucky escape.
0:24:08 > 0:24:11She's been lucky, definitely. It could have been worse.
0:24:11 > 0:24:14- So was that as bad as you thought it was going to be?- Not really, no.
0:24:14 > 0:24:18Now the blister's been dealt with, Kelsey's foot is bandaged up
0:24:18 > 0:24:19until it heals.
0:24:19 > 0:24:22- And the moral of the story? - No more cooking for me.
0:24:22 > 0:24:25What, for the rest of your life?!
0:24:25 > 0:24:29Maybe just take more care around hot oil. Bye!
0:24:32 > 0:24:33On Operation Ouch,
0:24:33 > 0:24:38we've been on a medical mission to show you how your body works.
0:24:38 > 0:24:40Can you see my tonsils?
0:24:40 > 0:24:43Yeah, it does look like poo. Certainly smells like poo.
0:24:43 > 0:24:45Does this look all right to you?
0:24:45 > 0:24:47We've had operations...
0:24:47 > 0:24:50- The skin on the surface of the eye. - I've got a big hole in my head.
0:24:50 > 0:24:53- Wide as you can. That's it, brilliant.- ..experiments...
0:24:53 > 0:24:55SPEAKS DEEPLY
0:24:55 > 0:24:58I can't let go of it.
0:24:58 > 0:25:00Tiny, put my brother down.
0:25:01 > 0:25:03..investigations...
0:25:03 > 0:25:06These are maggots. Can we get a nose pick as well?
0:25:06 > 0:25:08It's a blood-sucking leech!
0:25:08 > 0:25:10HE SCREAMS
0:25:10 > 0:25:12..and we pushed ourselves to the limit...
0:25:12 > 0:25:15Oh, yeah, pit of my stomach.
0:25:15 > 0:25:17- What's it going to feel like?- Chilly.
0:25:20 > 0:25:23..to show you just how amazing your body really is.
0:25:23 > 0:25:26It was a good game until I fell over.
0:25:32 > 0:25:36- So look after yourself.- And that brilliant body of yours.- Bye.- Bye.
0:25:54 > 0:25:57Subtitles by Red Bee Media Ltd