What does melanonychia refer to?

Melanonychia specifically refers to the darkening of the fingernails or toenails, which is primarily due to an increase in melanin pigment within the nail matrix. This condition can manifest as a single dark stripe or be present across the entire nail, depending on the underlying cause. It is important for nail technicians to recognize melanonychia, as it can be associated with various medical conditions, including infections and systemic diseases, or can arise from benign causes such as trauma or certain medications. Understanding this term helps nail technicians to provide informed advice to clients and to differentiate between normal variations and potential health issues.