Dermatology – When to See a Skin specialist, when to Stay at Home Everyone have minor troubles with our skin every so often, ranging from acne to inflamed pest bites to itchy breakouts that simply will not appear to disappear. While the majority of small skin issues don't warrant therapy, there are times when seeing a dermatologist is very important,otherwisecompulsory. This is melanoma, or black mole cancer cells. If you have a lesion or mole that looks suspicious, see your dermatologist straight away.