Meet the Other Phone. Protection built in.

Meet the Other Phone.
Protection built in.

Buy now

Please or to access all these features

Children's health

Mumsnet doesn't verify the qualifications of users. If you have medical concerns, please consult a healthcare professional.

Cystic Fibrosis concerns, despite negative newborn screening

38 replies

Caterpillar05 · 08/07/2025 22:42

Hi all, hoping for some advice or shared experiences.

Apologies, this may be a bit long winded but wanted to give as much context as I could.

My 3yo had a negative NBS for CF, but he’s had ongoing respiratory and GI issues since birth. Even when he’s well he will cough up mucus (just a lot less than when he’s unwell), usually when/after he’s running around.

Sorry TMI but it’s relevant - He’s had frequent mucus in his stools since newborn stage and still does, I’m talking almost every nappy. He has oily nappies sometimes too… he still goes in a nappy for number 2s because he’s afraid of going in the toilet, it takes him soooo long to go, bless him! They are very bulky, mushy, often extremely foul smelling (and foul smelling gas too, he could clear out a room full of adults!), sometimes with diarrhoea. He would suffer from constipation too but not severely, as in it sorts itself out. His stools have worsened recently (past month), ranging in the colours yellow/a paler yellow, orange/light tan, dark green, very dark brown/black (just the last 2 days - sticky consistency, like tar). I’m worrying this may be a sign of pancreas insufficiency. He’s still a healthy weight for his height and age but it looks like he’s lost some weight to me. I’ve weighed him but don’t have a weight from previous to compare him as we’ve never felt the need to weigh him before.

He’s had repeated respiratory infections, 2 hospital admissions (1 needing oxygen support during sleep), and countless A&E visits, mainly due to rapidly increased breaths per minute and a persistent, productive cough and coughing fits. Doctors have heard wheeze and crackles before, but sometimes another doctor won’t hear anything, usually not long after he’s just coughed, so I assume he’s cleared mucus. A chest x-ray at 20 months during his 2nd hospital admission, showed slight infection, but a follow up showed clear.

His skin is extremely salty (like sea water, especially his head), I understand it’s normal for sweat to taste somewhat salty but this is constantly - even when he’s not sweating and to the effect that even when I was giving him loads of goodnight kisses tonight, it left me with wrinkly feeling lips, the way they’d feel if you’d got too much salt on them, which has me concerned since a 1st and also a distant cousin has CF. Though his dad (my partner) and his sister who’s child it is that has CF have different dads, so we aren’t even sure what side the CFTR gene has came from and I’ve never had any reason to have genetic testing for anything CF related so unaware if I’m a carrier or not - same as his dad.

He was diagnosed with a CMPA as a newborn and was on Neocate for 1+ years, but his GI symptoms never fully improved, he just seemed happier in himself and he’s never had failure to thrive, so when I’ve mentioned this fact, it’s always been dismissed as there was some improvement. He’s finally been referred to a respiratory consultant, after being told he would be referred to the viral wheeze clinic at 16 months and again at 2.5y, but the referrals were never sent. His appointment is with a respiratory consultant that specialises in CF, and a sweat test will also be arranged.

In the meantime, I’m not sure whether I’m just having a bit of health anxiety over it or if I’ve genuine reasons to believe CF might be a possibility so I’m just wondering if anyone’s experienced a false negative NBS and their child has went on to be diagnosed with CF as a toddler, or if they know anyone that’s went through a similar situation and they would be willing to share their experience and the outcome.

Thanks in advance!

OP posts:
Back20 · 11/07/2025 17:24

Yes, I can understand your concerns. I’m afraid I’ve had similar experiences with the NHS. Are you taking notes of who has said what, and where possible getting everything in writing?

I actually think it would be worth writing out a time line with an overview of your concern's, where you’ve raised them and the outcome.

Then send copy to GP, and if you have contact with hospital them as well.
In fact I would put it as a complaint

Back20 · 11/07/2025 17:27

I’d even be tempted to contact the cystic fibrosis trust. Google them, there’s a helpline and WhatsApp

Needspaceforlego · 11/07/2025 22:59

@Caterpillar05 i dont know much about CF other than its genetic
But keep the windows up in the car. The ac will work better cooling the car than if your constantly getting more hot air in.
The same principle as heating somewhere, keep the hot air in, with ac you want to keep your cold air in (and the hot air out)

Cauliflowercheeses · 12/07/2025 15:41

Dont ever let anyone make you feel bad for worrying about your son. There are different signs and symptoms. Mine has never had respiratory issues yet he has ‘classic’ CF. I’m in a parents group and all the children were diagnosed differently. They don’t have to be very poorly. Mine has never been poorly, just struggles with weight.

it is in your family, therefore in his genes. That and your concerns are enough to push for a sweat test. The salt crystals also make me think he could have it. I say this kindly. Please get it checked then either way you know. Cf is not the worst thing and you and he will be fine but if he does have it the sooner you get the treatments, the better.

please report back x

ElleBelleLou · 12/07/2025 16:39

I can’t help with the diagnosing part OP but I completely understand your fears and wanted to offer a handhold. My twin sister had cystic fibrosis, it was missed when we were babies (so it does happen!) and she was diagnosed at age 24. We’re now 29, about to turn 30 and she is thriving. She’s been hospitalised 3 times since diagnosis but the help and medication available is incredible. If it is cystic fibrosis, please know your boy can still live a completely normal life. My twin is in a long term relationship, works an incredible job with an incredible salary, is out all the time eating and drinking what she wants. She’s had covid and chest infections and been able to recover the same as me (who doesn’t have CF). xxx

Caterpillar05 · 14/07/2025 22:11

@Back20 I have a quick print off from the GP with all his visits and brief descriptions, although I don’t think it documents all the a&e visits - just the admissions as there seems to be a good bit missing. I was told twice a referral was going to be sent to the viral wheeze clinic (same as respiratory clinic I assume?) but there was nothing in his notes and I’ve not received confirmation from the hospital to say they’d received the referral until his most recent one. I don’t remember the a&e doctors name the first time but I remember the date. I do however remember the GP who was supposed to have referred him. I didn’t even think of complaining if I’m honest but the more I think about it and due to the worsening of symptoms, I definitely think I’m going to raise one, especially if whatever is causing his symptoms could’ve been addressed a lot sooner.

@Needspaceforlego I worded my message incorrectly - I should’ve wrote I’ve the AC on when driving but the windows are down if we’re pulled up somewhere and the car is off 🙈 I didn’t actually know this until a couple of years ago when my partner brought it to my attention 🤦🏻‍♀️😂 thank you though as this advice would be helpful otherwise.

@Cauliflowercheeses yes absolutely, I’m even aware of this just by doing my research so I don’t know whether they’re being ignorant to the fact that not all cases are the same or if it’s simply just trying to give me reassurance.
I noticed today after crying that he had a salt stain from his tears ☹️ I feel so bad for him as regardless of what it may be - there is clearly some underlying issue causing all these symptoms and I feel like I’m not helping him in the short term with his appointment not being until next month. The mum guilt is real tonight!

Another question if anyone is able to kindly advise - I do believe he has nasal polyps but upon looking in to this further I also came across nasal polyps looking similar to enlarged turbinates. I know I’m not a medical professional and I don’t even know what a normal nasal passage looks like at this point lol! But what would be the tell tale sign that differentiates the 2? I would attach pictures for context but I have no idea how to! 🙈

Thanks again everyone for the input, this is my first post but it’s really made my concerns seem valid and that I’m not just being an over anxious mum for no reason!

OP posts:
Caterpillar05 · 14/07/2025 22:13

Ooh found how to attach pictures! First picture is his left nostril, it looks like it’s almost fully obstructed! Second and third picture is his right nostril.

Cystic Fibrosis concerns, despite negative newborn screening
Cystic Fibrosis concerns, despite negative newborn screening
Cystic Fibrosis concerns, despite negative newborn screening
OP posts:
Caterpillar05 · 14/07/2025 22:20

@ElleBelleLou It’s amazing to hear how well your twin sister is doing and it sounds like she’s made a pretty great life for herself! I’m trying not to get too worked up about things as hopefully there’s a simple explanation that’s easily resolved for whatever is causing his symptoms but it’s so hard not to worry too 🙈 it is very reassuring to hear your personal experience with CF, I really appreciate you taking the time to share it with me :) xx

OP posts:
Bringonchristmas36 · 14/07/2025 22:21

Hey, good luck OP. For the respiratory, have they not referred you to asthma clinic? My DD also suffered with colds becoming respiratory/quick breathing/low oxygen. Admitted to A&E. We paid privately in the end who diagnosis’s asthma. Moved onto steroids. Luckily never admitted again (fingers crossed).

Caterpillar05 · 14/07/2025 22:57

@Bringonchristmas36 thank you! They were supposed to in Oct 23 but I hadn’t heard anything at all to confirm
he had been added to the waiting list (I was checking the average wait time for this clinic online and it said 1 year so being unfamiliar with the process I just assumed that’s why I hadn’t heard back), so I went back to my GP in Oct/Nov 24 and asked to be referred again but same thing… didn’t hear anything at all back to suggest he had even been added to the waiting list! It wasn’t until I seen the GP recently and highlighted the salty skin (which has only recently became apparent too) that she sent a referral that day and within the week I had communication to confirm he had been added to the urgent waiting list, followed by an appointment for next month within a day or 2. Most doctors/GPs I’ve spoken to also believe he has asthma, but they can’t diagnose under 5s. He has had numerous inhalers, nebulisers and steroids too x

OP posts:
Needspaceforlego · 15/07/2025 00:11

@Caterpillar05
No worries over aircon - I just wish mine was working! First world problem.

I can't say much about CF other than DH has a cousin who must be late 30s with it who has a little kid herself.

What i can say is viral wheeze can be outgrown and lots of little kids get admitted with it but most will never be diagnosed with asthma.
My youngest was admitted 4 times around the age of 2, but had inhalers for a while then completely outgrew it.

Op fingers crossed you get seen sooner. I'd be tempted to call the clinic where you have been referred and ask if they'd keep you in mind for any cancellations.

Caterpillar05 · 16/07/2025 16:44

@Needspaceforlego I feel for you not having working AC in this heat 🥵

I always put the symptoms down to being asthma/viral wheeze and maybe a dairy intolerance, hoping he would just outgrow it, but it was the salty skin that set off my mum radar.

I gave them a call yesterday and they said they would definitely keep him in mind if a cancellation did come up. My GP is going to write them a supporting letter just to advise of worsening symptoms, they also advised me to get in touch with the HV to take his height and weight to plot in his chart just to make sure he hasn’t dropped any centiles and if I wanted her to see him at any point or if there was anything else she could help with in the meantime then just to get in touch as she’s willing to see us anytime, I couldn’t ask for better support from her if I’m honest, she really reassured me!

Thank you again for taking the time to reply x

OP posts:
Cauliflowercheeses · 19/07/2025 22:07

We’re here for you. Come back and let us know what happens with clinic and what happens next. Either way, please let us know x

New posts on this thread. Refresh page
Swipe left for the next trending thread