Hi there!
Well, without a detailed clinical evaluation it would be difficult to determine the cause of your symptoms. Possibilities that may need to be considered include infections, inflammations, primary skin conditions, cysts, warts etc. Without a definite diagnosis at hand it is difficult to suggest a management plan. If previous treatment has not been effective, it would be best to have this reviewed by a dermatologist for an accurate diagnosis and appropriate management.
Hope this is helpful.
Take care!
Also my anus is itching on and off.