Nummular Dermatitis (Nummular Eczema, Discoid Eczema)

What is nummular dermatitis?

Nummular dermatitis, also known as discoid eczema, is a specific type of dermatitis. This condition is characterized by the presence of round or oval-shaped itchy patches. These reddish lesions can manifest on various parts of the body, including the torso, limbs, face, and hands.

What causes nummular dermatitis?

The exact cause of nummular dermatitis remains unclear. However, several factors can contribute to its development:

• Association with Staphylococcus aureus infections

• Exposure to skin irritants

• Prolonged skin dryness, especially during colder months

What are the symptoms of nummular dermatitis?

Patients with nummular dermatitis typically exhibit:

• Distinct round or oval patches on the skin

• Reddish lesions that can be intensely itchy

• Potential scaling or crusting, especially if the patches become chronic or infected

How do I treat nummular dermatitis?

Treatment strategies for nummular dermatitis often align with those for general eczema. However, specific approaches might include:

• Moisturizers to combat dryness and maintain skin barrier integrity.

• Topical corticosteroids to reduce inflammation and itching.

• Avoidance of known irritants or triggers.

• Topical or oral antibiotics if a bacterial infection is suspected.

How do I prevent nummular dermatitis?

Prevention strategies, while not foolproof, can help reduce the frequency or severity of flare-ups:

• Regular moisturization to prevent skin dryness.

• Use of gentle, fragrance-free skin care products.

• Avoidance of known skin irritants.

• Swift treatment of any skin infections or injuries to prevent them from evolving into nummular lesions.