<s>[INST] I am a 26 year female. I have reed itchy bumps on my stomach, thighs and chest. And it appears to be contagious beacuse a few of my closet friends have them as well. I noticed if you dont scratch them, they go away. But it spreads by scratching. what could it be? I also notice when my body gets hot, they get inflammed. [/INST] Hello. Thanks for writing to us at Chat Doctor I will keep a possibility of scabies; the distribution of the rash and similar complaints in a close contact (friend) favor the diagnosis of scabiesScabies causes itchy lesions on sites like groin, lower abdomen, thighs, chest and neck. The itching is specially more at night. If I was the treating doctor I would have treated you empirically for scabies; single whole body application of 5% permethrin from neck downwards to the whole body and kept overnight for 8 hours. All close contacts should be similarly treated. Permethrin is a prescription product, I would suggest that you visit a dermatologist for a confirmatory diagnosis. An OTC oral antihistamine e, g cetirizine 10 mg once daily will provide you symptomatic relief from itching. Regards </s>