Erythema Multiforme Major details and treatment
Erythema Multiforme Major details and treatment
Erythema Multiforme Major (EMM) is a severe hypersensitivity reaction primarily affecting the skin and mucous membranes. It is often triggered by infections, particularly herpes simplex virus (HSV), or certain medications.
Key Details:
Symptoms:
- Skin Lesions: EMM is characterized by target-like lesions that appear on the skin, often starting on the extremities. These lesions can range from small spots to large blisters.
- Mucosal Involvement: EMM also affects mucous membranes, leading to painful sores in areas such as the mouth, eyes, and genital regions. The involvement of multiple mucous membranes is a hallmark of EMM.
Causes:
- Infections: The most common trigger is a viral infection, especially HSV. Other infections, like Mycoplasma pneumoniae, can also cause EMM.
- Medications: Some drugs, including antibiotics (e.g., sulfonamides) and anticonvulsants, can induce EMM.
Treatment:
- Mild Cases: In cases linked to HSV, antiviral therapy (e.g., acyclovir) may be prescribed. Topical corticosteroids and soothing mouthwashes can help relieve symptoms.
- Severe Cases: Hospitalization might be necessary for extensive skin involvement or severe mucosal symptoms. Treatment typically involves corticosteroids, pain management, and supportive care.
Prognosis:
Most cases resolve within weeks, but recurrence is possible, particularly with HSV reactivation.
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