My doctor was suppose to refer me to a dermatologist. it's been two weeks and i haven't heard anything. how long should i wait before calling her back?

Call the office: It is unlikely that you have a dermatologic emergency, so the delay is unlikely to have any lasting effect. Dermatology appointments may require pre-certification depending on your health plan and may be difficult to get in your community, however it is appropriate to call your md's office staff to see where they are in terms of trying to schedule an appointment.