What condition is indicated by a natural nail that is lifting at the free edge and continues to the lunula without shedding?

The condition indicated by a natural nail that is lifting at the free edge and continues to the lunula without shedding is onycholysis. This condition is characterized by the separation of the nail from the nail bed, which can occur for various reasons, including trauma, infection, or underlying health issues. In onycholysis, the nail may appear discolored and can be associated with discomfort, but it does not necessarily mean that the nail will shed or fall off completely, as it is still attached at the base, specifically at the lunula.

Onycholysis distinguishes itself from other conditions such as athlete's foot, which primarily affects the skin on the feet and does not involve the nails. Psoriasis can affect the nails but typically presents with different symptoms, including pitting or red spots under the nails rather than the lifting described. An ingrown nail, on the other hand, pertains to the nail growing into the surrounding skin, which is a different presentation and issue altogether. Therefore, understanding these distinctions helps clarify why onycholysis is the correct identification for the condition described in the question.