<s>[INST] Hello, my father-in-law recently dyed his hair at a salon yesterday & today he has clear fluids coming out of his scalp continuously with red blisters. Is there anything over the counter we can purchase for him? He does not want to go to the doctor because he doesn t have health insurance. He s experimented with hair dye a few years ago with the same allergic reaction , but he said that time there was a stream of fluids coming from his head and even his nails fell off? Why he chose to dye his hair again? Who knows. Is there an indicator when the problem is serious enough to seek medical attention? [/INST] Hello, It is obvious that he has a delayed hypersensitivity to hair dyes (Type IV hypersensitivity) that takes a few hours/days to manifest and lasts for several weeks sometimes. He must take oral corticosteroids and can also apply topical steroid creams plus antihistamine tablets to control the current situation. Patch test MUST be done after a few weeks to know which chemical is causing this reaction as the same chemical can be present in several other substances like toothpastes, detergent, mouthwashes etc. Thanks. </s>