Published on: 7/4/2025
What can cause brown discoloration of my nails?
Brown discoloration of nails can be caused by a condition called melanonychia, which might be benign or indicate something more serious. It's important to understand the possible causes and consult a healthcare provider for a proper diagnosis.
Explanation
Brown discoloration of the nails, also known as melanonychia, can occur for several reasons. It may be harmless, like a mole under the nail, or more serious, such as a sign of melanoma, a type of skin cancer. Sometimes, melanonychia appears as a brown or black stripe along the nail, which is called longitudinal melanonychia.
Possible Causes:
- Benign Causes:
- Pigmented moles or freckles
- Trauma or injury to the nail
- Fungal infections
- Serious Causes:
- Melanoma, a type of skin cancer
Melanonychia can be a clue to a correct diagnosis, so it is essential to pay attention to any changes in your nails. If you notice new or changing brown discoloration, it is important to consult a healthcare provider. They can determine whether the condition is benign or if further investigation is needed.
Understanding the appearance and changes in your nails can help in recognizing whether the condition is benign or requires medical attention. Always seek professional advice if you are unsure about changes in your nails.
(References)
- Haneke E, & Baran R. (2001). Longitudinal melanonychia. Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.], 11442597.
- Gradinaru TC, Mihai M, Beiu C, Tebeica T, & Giurcaneanu C. (2020). Melanonychia - Clues for a Correct Diagnosis. Cureus, 32064201.
- Johannessen JT, & Juel J. (2023). Benign or malign disturbances of the nail apparatus. Ugeskrift for laeger, 38018740.
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