What is chilblain lupus?

What is chilblain lupus?

Chilblain lupus is a symptom of lupus. Lupus is an autoimmune disorder (when your immune system mistakenly attacks healthy cells). People with chilblain lupus get painful red or purple sores and discolored patches of skin. These small sores (chilblains) form or worsen after exposure to cold temperatures. The word “chilblain” comes from words that mean “cold” and “sore.”