yes it can be on your tailbones too.clobetasol ointment.

May help to see a dermatologist rather than a regular doctor

I have went to Dr.s for 26 years and nothing helps it seems i have these itchy spots come on my arms and shoulders and i scrach them raw and then they dont want to heal. When the do heal sometimes they will itch later and it starts again

My dermatologist diagnosed that (I had the same exact symptoms) as "inward psoriasis". She gave me Valerate ointment (cortisone) and I used it twice a day for two weeks. Now I just use it if there is a flare up. Such relief!! And to be believed was even better.

My issue is dairy. I think people need to try to test out giving up various foods, starting with the most likely allergens one at a time (dairy, eggs, wheat).