my adult son, 42 years old called me this morning at 5am, about a rash that he has on his  stomach, parallel lines, itchy and hot to the touch. Said he has been having them for a couple months now. He clearly is concerned. He thinks it might be shingles, but everything I have read about shingles, that is not parallel lines.  What do you think?
Hi, Thanks for writing to us. I agree with you that it is not shingles. From the description provided, probably your son has a type of urticaria known as dermatographism. It is usually treated by intake of oral antihistamines daily for few weeks and then depending on response it can be tapered. Ask him to consult a dermatologist nearby. Regards