Red tiny (chickenpox like) spreading spots, what can i take for this?

Don't know what it: Is. Does it itch? If yes, Benadryl (diphenhydramine) or calamine lotion can sometimes help to reduce itching. A rash from chickenpox often occurs first on trunk (chest/back) ; then moves to face ; then extremities. The rash becomes blisters that itch. Blisters usually have all transformed into scabs in about a week. There are usually around 100 to 300 lesions (more on adults than small children).