Bruise, injury most: likely. However, without a high quality photo, guessing accuracy is greatly decreased. Suggest use the phone system; AKA internet & a search engine, e.g. https://www.google.com/search?q=nail+bed+black+line select images & look for a similar image. Be aware, depression, ADHD, etc. (like all diagnoses) = names for patterns of behaviors, not insight into reasons or effective/helpful treatments.
Answered 12/15/2017
446 views
A doctor has provided 1 answer
A doctor has provided 1 answer
10 doctors weighed in across 3 answers
6 doctors weighed in across 3 answers
2 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question