Hello,
It seems like you are having an
allergic reaction. It may be caused by something you are eating, or something you are in contact through the skin like a new detergent you are using, shampoo or cream, etc. Also can be hydrothyazide, if the rash started after starting using it. The way to treat it is to first identify what is causing it and avoid that trigor. In case of hydrothyazide, stop it after talking with the doctor who prescribed it to get another substitute as needed. Drink plenty of water to be well hydrated.
Use an anthistamine like
Cetirizine 10 mg or
Loratadine 10 mg once per day to reduce itching and new lesions. I don't know the cream that the
dermatologist suggested you to use, but I would suggest using a steroid cream like
Prednisone or
Dexamethasone in lower dose, once per say. Since the rash is spreading it maybe is not very handy to use a cream on the lesions, so consider taking a treatment of oral
steroids. That will help to resolve the rash. For this contact a local doctor to prescribe.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Klarida Papaqako, General & Family Physician