Which type of nail condition is characterized by discolored spots on the nail surface?

Leukonychia refers to a condition where white or discolored spots appear on the surface of the nails. This condition can be caused by various factors, such as trauma to the nail matrix, allergic reactions to nail products, or systemic health issues. The presence of these distinctive spots differentiates leukonychia from other nail conditions.

In contrast, nail fungus or onychomycosis involves a fungal infection that causes nails to become discolored, thickened, and brittle, often turning yellow or brown rather than showing distinct spots. Onychocryptosis, also known as an ingrown nail, manifests as discomfort and possibly infection at the edges of the nail and does not typically involve discolored spots. Understanding these differences helps nail technicians identify and properly address clients' nail conditions.