Hi all! I have few questions, sorry for bugging.. Unfortunately I'll have to wait for two and a half more months to see my dermatovenerologist. She saw me only once, made a scratch test, said that I have urticaria (factitia) and sent me home with antihistamine pills (I'm not from US, but the ones I'm taking are Zyrtec like, based on cetirizinum). Also said that I have foliculitis on my back.. I've been reading about mastocystosis and I think that there's a great chance I have it (headaches, tachy, itching, low bp, nausea, vertigo, presyncope..) a) I still don't understand where's the difference with masto and MCAD? Can someone help with that? b ) I take one pill (10 mg) in the morning, it does help with itching (although it still itches), but things get worse in the evening. Anyone with masto/MCAD having that kind of problems? c) Also, do you have feeling like that your throat is swollen? Even small pressure on my neck gives me a feeling of choking and I start coughing.. I also feel that lymph nodes on my neck are swollen, but my GP said "They are just sized like that" Maybe I have "Hypochondriac" written on my forehead? d) If I've got it correctly, mast cell disorders are related to immune system? Thank you in advance!