Cold weather can sometimes trigger painful swelling of the fingers and toes, known as chilblains or perniosis. Learn what causes it, who is affected, and simple ways to prevent it.

Background: Small lymphocytic lymphoma is a relatively rare B-cell non-Hodgkin lymphoma that is considered to be the tissue equivalent of the much more common entity chronic lymphocytic leukemia.

We present a case of SLL with a previously unreported complication demonstrating perniosis-like features involving the fingers and toes. The infiltration of the periungual areas with lymphoma cells ...