I am a Chinese.I had been suffering froming allergic phenomenon since I was 17 years old.During the last 6 years,I had been looking for the solution to ruduce the impact and tend to find the logic of PATM phenomenon.This days,I have some break—through discoveries that may uncover the principle of a kind of PATM.My PATM phenomenon is intensely related to my mind.when I thought something painfully,the allergic phen— become serious.Recently I find a kind of neurotransmitter called Histamine that probably be the main anaphylactogen.For this kind of compound could contribute to allergic phen— like hard to breathe,coughing,sneezing,tickling.For it is a kind of neurotransmitter,I think there must be some reasons that it is intensly related to mind.The main discoveries and logic is followings:something like prostaglandin induce mast cell tissue,it is called Mast cell tissue hyperplasia medically.The mast cell tissue release Histamine which spread to the air by some ways which cause allergic phen—.And I think the mast cell tissue is highly related to brown adipose tissu.Brown adipose is distributed in scapula,shoulder,neck, perineumIt.So,you might feel burning and scratch frequently in these place.Generally,I thought the instinct of PATM caused by histamine is immune system problem.So lots of people also suffer from rheumatic arthritis when they grow old.