A 46-year-old member asked:
What is white crest of a fingernail?
1 doctor answer • 1 doctor weighed in
Internal Medicine 27 years experience
Lunula: I believe you are referring to the lunula or "little moon" seen under your fingernail most prominently on your thumb. It is an area of less developed collagen and has little medical significance although abnormailties may be associated with systemic disease.
5.7k viewsAnswered >2 years ago
Last updated Jul 21, 2018
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership
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.