hi. It is very difficult to know the exact clinical picture without examination. Is the itching more at night? are their any other family members affected? What is the distribution of the rash? if the answer to the above questions is yes, then most likely you suffer from scabies. Scabies is a hypersensitivity reaction/allergic reaction to the mite. Apply 5% permethrin cream after a scrub bath at night over the whole body except face, leave it overnight. Itching will persist or a few days even after you have applied the medicine properly. Take an antiallergic tablet like cetrizine once daily for itch relief for a week If the condition still does nt improve after a week or so, then review with your dermatologist.