Polydactyly or hyperdactyly

Cover image: A 39-year-old man presented for evaluation of his acne. He had no notable medical history and was taking no medications. Physical examination revealed an incidental finding of six functional digits on his hands and feet. He had no family history of similar findings. Bilateral polydactyly of the hands and feet is rare. The extra…

Lambert–Eaton myasthenic syndrome (LEMS)

Paraneoplastic or primary auto-immune neuromuscular junction disorder characterized by proximal weakness and autonomic dysfunction.

Physeal fractures

Fractures through a growth plate (physis).

Psoriatic arthritis (PsA)

Psoriatic arthritis is a long-term inflammatory arthritis that occurs in people affected by the autoimmune disease psoriasis.