U.S. doctors online nowAsk doctors free
A 42-year-old member asked:

Anyone ever heard of doing an incisional biopsy to diagnose skin rash?

2 doctor answers8 doctors weighed in
Dr. Michael Fisher
Dermatology 33 years experience
Punch biopsy: Punch biopsy is considered the primary technique to obtain diagnostic, full-thickness skin specimens. It is performed using a circular blade or trephine attached to a pencil-like handle. The instrument is rotated down through the epidermis and dermis, and into the subcutaneous fat. The punch biopsy yields a cylindrical core of tissue that must be gently handled (usually with a needle).
Dr. Jennifer Haley
Dermatology 24 years experience
Possibly: Incisional biopsy rather than punch biopsy is often necessary to diagnose inflammatory conditions that may involve the fat or deeper vessels.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Apr 30, 2016


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.