Hi,
Welcome to the ehealthforum and I am really glad to help you out. There are 3-4 possibilities which I can think of in view of the symptoms described you.
The first possibility is scabies. It is caused by a mite and the lesions are small red extrememly itchy bumps and they typically occur on the hands,genitalia, feet & elbows. Permethrin & lindane are used for the treatment but this should be taken only after consulting a dermatologist.
Contact dermatitis can also present with similar symptoms. The treatment consists of avoiding the culprit irritant. Using the steroid cream does help. Viral and fungal infection are 2 more possibilities which can have a similar presentation.
Please do consult a dermatologist for the confirmation of the diagnosis as it is not possible to diagnose online.
I sincerely hope that helps. Take care.