A skin biopsy is a procedure in which a doctor cuts and removes a small sample of skin to have it tested. This sample may help your doctor diagnose diseases such as skin cancer, infection, or other skin disorders.
There are several types of skin biopsy, including:
Shave biopsy: The doctor shaves a thin layer from the top of a lesion.
Punch biopsy: The doctor uses an instrument called a punch to remove a circular section through all layers of the lesion.
Excisional biopsy: The doctor uses a scalpel to take off the entire lesion. This method is used for smaller lesions.
Incisional biopsy: The doctor uses a scalpel to remove a small sample of a large lesion.