It depends: It depends on what caused the rash. For example, if it is due to poison ivy then medications will take several days to clear the rash. Hives may clear over night with steroid pills but other medicines with less side effects may be desirable although they probably would take longer to kick in.
Answered 7/30/2013
5.1k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question