How is discoid lupus diagnosed?

How is discoid lupus diagnosed?

A dermatologist (skin care doctor) may diagnose discoid lupus. Usually, the dermatologist uses a test called a biopsy.

During a biopsy, your dermatologist takes a small skin sample. The provider sends the skin sample to a laboratory, where specialists examine it under a microscope. Looking at the skin sample under a microscope can tell healthcare providers whether skin sores are due to discoid lupus or another condition.