Our Lupus (Systemic Lupus Erythematosus or SLE) Main Article provides a comprehensive look at the who, what, when and how of Lupus (Systemic Lupus Erythematosus or SLE)

Medical Definition of Rash, butterfly

Rash, butterfly: A red, flat facial rash over the bridge of the nose. Over half of patients with systemic lupus erythematosus (SLE) develop this characteristic rash. Because of its shape, it is frequently referred to as the "butterfly rash" of lupus.

The butterfly rash of lupus is typically painless and does not itch. Along with inflammation in other organs, the butterfly rash of lupus can be precipitated or worsened by exposure to sunlight, a condition called photosensitivity. The photosensitivity can be accompanied by a worsening of inflammation throughout the body, causing a "flare" of the disease.

A "butterfly rash" can also occur in other conditions such as rosacea.

Butterfly Rash illustration

Last Editorial Review: 6/9/2016

Lupus Pictures Slideshow: Causes, Symptoms, Diagnosis, and Treatments

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