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Why is my toenail black and hollow

A 19-year-old female asked:
Dr. Christopher Hendrix
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

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A female asked:
Dr. Jehangir Rao
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
A 56-year-old female asked:
Dr. Glenn Aufseeser
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
Dr. Jeffrey Bowman
39 years experience
Black toe nails: Black colored toenails could be from trauma, fungus , hematoma and even a rare form of cancer. See a podiatrist for a biopsy to play it safe.
A 49-year-old member asked:
Dr. Eric Tepper
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.
A 49-year-old member asked:
Dr. Adam Teichman
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
A 42-year-old member asked:
Dr. Ronald Oberman
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
A 41-year-old female asked:
Dr. Brian Wagner
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
A 47-year-old member asked:
Dr. Arnold Beresh
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.
A 23-year-old female asked:
Dr. Scott Keith
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
A 41-year-old male asked:
Dr. Jeffrey Hoffman
Family Medicine 33 years experience
Recommend consult: consider seeing a dermatologist about this to be sure this is not anything more problematic
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