Welcome in H.C.M.
I have gne through your query regarding itching over scrotum, itching and red corners of eye and skin at the top of ear also has the same problem.
Your clinical history and co-relation with symptoms shows that most probably it is your skin disease and appears to be allergic. It will be better to consult your dermatologist
Till you are waiting for dermatologist you may take now-
1- Tab containing antiallergic and anti inflammatory properties like Fexofenadine
having antibiotic + antifungal + steroids
Probably above answers your query and will help you. Wishing for speedy recovery.