I have a dime sized red mark on the side of neck. it's kind of raised along the edges. a little itchy. started like a pimple. been there for 2 weeks?

Possible ring worm: Your description sounds like ring worm or tinea corporis, but there are other causes that fit that description. Ring worm responds quite nicely to OTC clotrimazole, applied twice a day for 3 weeks. If there is no improvement in a week, I recommend that you have it evaluated by either your family doctor or a dermatologist.

Eval: This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. Once accurately assessed a treatment plan can be developed.