What is the common name for tinea unguium?

• A. Nail fungus
• B. Nail psoriasis
• C. Nail discoloration
• D. Nail infection

Answer: (A)

Tinea unguium is commonly referred to as nail fungus. It is a fungal infection that affects the nails, leading to a range of symptoms including discoloration, thickening, and brittleness. The term "nail fungus" specifically describes the type of organism, often dermatophytes, that infects the nail. This is the most widely recognized term among both healthcare professionals and the general public to denote the condition, making it the correct answer. The other terms provided relate to various nail conditions but do not accurately encapsulate the nature of tinea unguium. For instance, nail psoriasis is a distinct autoimmune condition that presents differently, and nail discoloration or nail infection are more general terms that do not specifically identify the fungal aspect of tinea unguium.