Does anyone who follows me know anything about Mast Cell Activation Syndrome? I've got a friend in a vague, multi-symptom health crisis and he suspects this might be what's going on, but he's not sure and he's desperate for help.

Putting this out there to help widen his net. I can relay his symptoms and history of seeing doctors (he's in Sweden) recently and everything - but so far he's struck out hard on any good leads, even after many doctors, super strict diet and other interventions.

He's mainly interested in finding a physician(s), so that's the best way you could help, but any other ideas, advice or wild hypotheses are invited, also. He's some information he shared (designed to be given to an AI, but works for people, too):

- Suspected MCAS with histamine intolerance, SIBO/IMO that was successfully treated, brainfog, aphasia, fragmented sleep, cardiac symptoms, anemia relapse (128→166→130; before gut treatment, during gut treatment, and then a few months later, after a cold), possible microclotting

- Swedish public healthcare is too slow and won't do comprehensive functional testing

- Budget not a constraint (willing to spend €200k if needed, probably more)

- Had covid 3-7 months before first symptoms started appearing, 9 months before they got severe.

- Need someone who won't dismiss complexity or get ideologically rigid about "natural only" OR "conventional only"

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Hmm. Personally, I’ll start with a elimination diet.

Fast for one day then do a keto style diet, where you mostly eat fat and if things feel okay slowly add other foods one by one to see if my symptoms come back.

If the fast and keto don’t have an effect perhaps environment may be a factor ( possible mold issues. ) for this I might take a trip somewhere dry to see if I feel better.

If not then bloodwork and perhaps a toxicology test.

Gut microbiome may be a factor so incorporating fermented foods may be helpful.

When it comes to health,

light/water/magnetism is the most important to get right.

I cannot explain the science in detail myself but I know the "rules & what to do's".

Sweden is a very high latitude environment and thus it's a lot more difficult to deal with his symptoms.

Would be willing to talk to him about it for no charge as it sounds urgent.

If he'd rather learn about it himself, the quickest shortcut for me was Jack Kruse's work. Totally changed my life.

Is this more or less complete symptoms list? Any hypersensitivity-like symptoms, or cutaneous ones exacerbated by QACs and other pesticides or odour neutralisers? I have someone who mentioned MCAS in her son and seemingly successful outcome. However, that guy had distinctive skin symptoms and it was very pre-pandemic. OTOH there is a minor study about H1 and H2 receptor blockers, but it was minor (sample + blind 50-60 individuals AFAIR) based on self-reporting. That's off the top of my head, I'm sorry for inaccuracies.

will check with him, thanks!

Checked for IGG food intolerances? They cascade quickly once you have one. MCAS like randomness since you don't know the list of food triggers.

Lots of OTC acid reflux drugs are H2 antihistamines which are effective against MCAS. Worth a shot as low risk way to get information.