Final answer:
It is best to consult a dermatologist first before using a medicated shampoo for sores on the scalp.
Step-by-step explanation:
When a client has sores on their scalp and asks for a medicated shampoo, it would be wise to consult a dermatologist first (Option B). Consulting a dermatologist will help determine the cause of the sores and whether a medicated shampoo is the appropriate treatment. The dermatologist can provide a proper diagnosis and recommend the most suitable course of action.
Learn more about Dermatology