Illinois Nail Technician Practice Exam

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What causes leukonichia?

Injury to the matrix
Fungal infection
Bacterial infection
Improper nail care

The correct answer is: Injury to the matrix

Leukonychia is a condition characterized by white spots or lines on the nails, which usually indicates an issue originating from the nail matrix. The matrix is the tissue under the base of the nail that produces the keratin that forms the nail plate. When there is an injury to this matrix, it interrupts normal nail growth and can lead to the appearance of leukonychia. Injuries can occur from physical trauma, such as smashing a finger or aggressive nail filing, and can manifest as white spots as the nail grows out. The important aspect here is that the formation of leukonychia is directly related to damage that affects the nail matrix, making this the primary cause of the condition.