You need to consult a doctor, Farzana.
There are two treatments for OCD, medication or psychotherapy, specifically Cognitive Behavior Therapy. You doctor will be able to guide you to the best treatment option for you.
The most common cause of infection cats and dogs is ear mites, which create a large amount of very dark brown itchy debris. Most ear mite treatments require multiple doses. Veterinarians carry options...
My Itchy Fingerby
So, one of the things I did for my 30th birthday was get a barn-burner of a pedicure--the 15 massage add-on, the deep moisture treatment, the callous removal (I was a little dubious about that, as I spend so much baref