Tried Hydrocortisone Cream And Hydroxyzine Pamoate For Rash, But Not Effective.

i have a rash on my legs, arms, and butt, the sores start out as a small white bump that itch, they fester into larger red bumps, some become open sours i think from scratching. i have been given antibiotics twice for this the sours improve but don't go away. my dr. referred me to a dermatologist but the appointment is weeks away. I am self medication with hydrocortisone cream and hydroxyzine pamoate but the itching is steel unbearable sometimes, mostly at night i think i scratch in my sleep and when i wake up the itching is unbearable, what can i do to releave the itching until i see the dermatologist.