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  5. I noticed a light black-brown vertical line on my left thumb today. I don't recall injuring it, but I'm pretty certain it wasn't there before. There's no pain or anything. Could this be something serious?

I noticed a light black-brown vertical line on my left thumb today. I don't recall injuring it, but I'm pretty certain it wasn't there before. There's no pain or anything. Could this be something serious?

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I noticed a light black-brown vertical line on my left thumb today. I don't recall injuring it, but I'm pretty certain it wasn't there before. There's no pain or anything. Could this be something serious?

Likely to be a benign condition known as a splinter hemorrhage. It is usually harmless but can sometimes indicate an underlying medical condition. I recommend monitoring it for any changes in size or color. If you notice any changes or if it persists, you may consider consulting a dermatologist. There is no specific medication for this condition."

Last updated on 22 Jan 2025

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