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My toenails turn black after exercise

2026-09-18 00:55
2026-09-18 04:28

Black toenails after exercise could be caused by the following reasons: 1. ** External injury **: - During exercise, especially when running, running shoes and socks might squeeze and rub against the toes. For example, if one ran for a long time, like cross-country running (cross-country running had more impact and friction when the foot was in the shoes), the sliding of the foot would cause the toes to touch the front of the shoes. Hundreds or thousands of such movements would cause the end of the nail to hit and squeeze, causing the blood vessels under the nail to rupture and bleed. The blood would accumulate under the nail and turn black. In this case, no special treatment is usually needed and it can recover on its own. Usually, pay attention to wearing loose and soft shoes to avoid being squeezed or injured again. However, if the injury is serious, it is recommended to check it in the emergency room to avoid a more serious situation. 2. ** Fungus infection **: - After exercise, the feet sweated more. If there was ringworm of the hands and feet or trauma on the feet, the skin fungus, yeast, and mold may cause a fungus infection on the deck or under the nail (collectively known as onychomycosis). Among them, Trichophyton rubrum was the most common pathogen. It was often accompanied by symptoms such as nail thickening, blackening or greying, roughening, and damage. Amorolfine, ciclopirox, etc. can be used externally, or itraconole, terbinafine, etc. can be taken by mouth. 3. ** Other potential reasons **: - It could be related to iron-deficiency leukemia, complications caused by diabetes, heart or kidney problems, and even some other diseases such as leukemia. If you have doubts about these reasons, you can go to the hospital to consult a professional doctor for diagnosis and treatment. While waiting for the TV series, he could also read the exciting content related to this site!

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