Top answers from doctors based on your search:
Why is my toenail black and hollow
A 19-year-old female asked:

Dr. Christopher Hendrixanswered
Podiatry 28 years experience
Biopsy: Best bet - let your pcp ot podiatrist biopsy and culture the nail tissue for you to objectify the source of nail thickness and discoloration. Any rece... Read More
4.6k viewsReviewed >2 years ago
A female asked:

Dr. Jehangir Raoanswered
Specializes in Holistic Medicine
Wait: It might take 12 to 18 months for a new nail to grow out.
Is it only 1 toe? If multiple have your toes checked out
1.3k viewsAnswered >2 years ago
A 56-year-old female asked:

Dr. Glenn Aufseeseranswered
Podiatry 10 years experience
Many things: Many things can cause discoloration of a toe nail. It could be blood resulting from a history of trauma or a fungal infection. I would advise seeing... Read More
5.1k viewsAnswered >2 years ago
A 49-year-old member asked:

Dr. Eric Tepperanswered
Podiatry 42 years experience
Trauma to toenail: It usually is indicative of a traumatic event to the toenail. The discoloration is a sub ungual (beneath the nail) hematoma.
4.9k viewsReviewed >2 years ago
A 49-year-old member asked:

Dr. Adam Teichmananswered
Orthopedic Foot and Ankle Surgery 20 years experience
Rubbing in a shoe: If you are runner this is a common occurence due to pressure with the nail and the shoes. We call this runner nail. If you are a runner or not sekin... Read More
5.3k viewsAnswered >2 years ago
A 42-year-old member asked:

Dr. Ronald Obermananswered
Podiatry 32 years experience
Avoid more trauma: Assuming you mean the typical "black nail" which develops from either direct or repetative low grade trauma(ie: toe banging up against tip of shoe in ... Read More
5.7k viewsReviewed >2 years ago
A 41-year-old female asked:

Dr. Brian Wagneranswered
Podiatry 19 years experience
Black lines: This could be caused by your skin color with melanin within the nail root. If there is one line or so and your light skinned i would have it looked a... Read More
4.9k viewsReviewed >2 years ago
A 47-year-old member asked:

Dr. Arnold Bereshanswered
Podiatry 42 years experience
Approximately 1 year: Depending on how it was injured it may take up to 1 year for the nail to fully grow out.
5.9k viewsAnswered >2 years ago
A 23-year-old female asked:

Dr. Scott Keithanswered
Podiatry 45 years experience
Follow the line.: It should worry you enough to have it looked at. Black lines on nails might be innocent or could be something more concerning. To remove all doubt, h... Read More
2.1k viewsAnswered >2 years ago
A 41-year-old male asked:

Dr. Jeffrey Hoffmananswered
Family Medicine 33 years experience
Recommend consult: consider seeing a dermatologist about this to be sure this is not anything more problematic
417 viewsAnswered >2 years ago
People also searched for:
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