IMMUNOLOGY

Detailed explanation-1: -The butterfly rash is one of the more iconic signs of lupus, an autoimmune disease.

Detailed explanation-2: -Is a butterfly rash a definite indicator of lupus or can you have a butterfly rash and not have lupus? While the butterfly rash (also called a malar rash or lupus rash) is one of the most commonly known symptoms people associate with lupus, it does not need to be present to be diagnosed with lupus.

Detailed explanation-3: -Malar rash, also named a butterfly rash, is a common facial presentation of multiple disorders. It is characterized by an erythematous flat or raised rash across the bridge of the nose and cheeks, which usually spares nasolabial folds. It may be transient or progress to involve other areas of facial skin.