Malar rash

Malar Rash

Overview

Malar rash, also known as "butterfly rash," is a medical condition characterized by an erythematous (red) eruption on the central face. This rash typically covers the cheeks and the bridge of the nose, often sparing the nasolabial folds. It is associated with a variety of conditions, ranging from skin disorders to systemic diseases.

A typical presentation of malar rash on the face

Causes

Malar rash can be caused by several factors and conditions, including:

• Lupus erythematosus, particularly systemic lupus erythematosus (SLE)
• Rosacea
• Dermatomyositis
• Sun exposure
• Certain medications
• Infections

Symptoms and Characteristics

The rash is typically:

• Red or purplish
• Slightly raised
• Painful or itchy in some cases
• Symmetrical over the cheeks and nose

Diagnosis

Diagnosis of malar rash involves:

• Clinical examination of the facial skin
• Patient history analysis
• Laboratory tests if systemic lupus erythematosus or other connective tissue diseases are suspected
• Skin biopsy in uncertain cases

Treatment

Treatment depends on the underlying cause:

• For lupus-related rash: Corticosteroids or antimalarial medications like hydroxychloroquine
• For rosacea: Topical treatments and avoiding triggers
• For dermatomyositis: Corticosteroids and immunosuppressants

Prevention and Management

Preventive measures include:

• Sun protection with broad-spectrum sunscreen
• Avoiding known triggers
• Regular dermatological check-ups for those with chronic conditions

Prognosis

The prognosis of malar rash varies greatly depending on its underlying cause. Management of the primary disease often leads to improvement in the rash.

References

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• Mayo Clinic - Lupus
• American Academy of Dermatology - Rosacea
• American College of Rheumatology - Dermatomyositis

External Links

• Skin Cancer Foundation - Sunscreen
• Lupus Foundation of America - What is a Malar Rash?

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