This is an important question. When in doubt, do not book him and always refer to a medical professional. A dermatologist or podiatrist would be the ideal medical professional to refer to. As a nail technician, you are not expected to know everything and you would be doing your client a big favor by expressing your concern and suggesting that he see a health care professional.
— Dana Stern, M.D. is a board-certified dermatologist specializing in nails. She works in private practice in New York City