Conversation: The conversation between human and AI assistant.
[|Human|] I have been developing itching at night for the last few weeks. The rash is made of bumps and welts, no discoloration and goes away in the morning. It is very localized, sometimes on only one arm or leg, or on my feet, not over my whole body. Scratching seems to cause the rash to spread. We have tried hypo allergenic detergent and it doesnt seem to be related to a particular food. What are some causes of this night rash and what can I do about it?
[|AI|]  Hello. Thanks for writing to us at Chat Doctor If I was the treating doctor I would have kept a possibility of scabies and would have treated you empirically for it. Nocturnal itching is characteristic of scabies. Itching is usually severe and there might be bumps resembling insect bites. Empirical treatment of scabies is with 5% permethrin lotion, applied from neck downwards to the whole body after a scrub bath, it is kept on for 8 hours and is followed by bathing the very next day. Permethrin is a prescription product and I would suggest that you talk to your physician for the needful. An OTC oral antihistamine e.g. cetirizine 10 mg once daily will provide you symptomatic relief from itching. Regards