Answer:
issues of the skin
Step-by-step explanation:
A dermatologist is a doctor that specializes in treating skin, hair, nail, and mucous membrane disorders and diseases.
...
Dermatologists can also use laser surgery to treat a variety of skin issues or cosmetic complaints, including:
tumors.
warts.
moles.
unwanted tattoos.
birthmarks.
scars.
wrinkles.