Stomach Virus Treatment More Condition_symptoms What Would This Disorder Be Called?

What would this disorder be called? - stomach virus treatment more condition_symptoms

My friend has an intense fear of becoming ill in the sick-time public or receive .. with a stomach virus and was very ill in a shop once, and since then when he goes, his heart was racing, dry mouth, a few steps, is very ill, and covered his face with his T-shirt "if you sick .. " .. Your doctor prescribed Buspar and beta-blockers that are not helpful at all, by what is almost worse ... What is referred to this condition and treatments are available? How is it over so you can leave the house?