Erythema multiforme
What is erythema multiforme?
Erythema multiforme (EM) is a skin condition that is considered to be a severe allergic reaction. It can be caused by certain medications, infections, or even sun exposure. It's characterized by the formation of skin lesions that are red in color and shaped like a bull's-eye. The lesions can appear on any part of the body, but they tend to be more frequent on the hands, arms, and feet.
Symptoms of erythema multiforme
The most common symptom of erythema multiforme is a rash that appears as red patches. These patches may look like the shape of a target or a bull's eye. Other symptoms can include:
- Painful blisters
- Itching or burning sensation
- Fever
- Fatigue
- Joint pain
- Headache
- Mouth sores
- Swelling of the lymph nodes
Risk factors for erythema multiforme
There are several risk factors for erythema multiforme, including:
- Exposure to certain medications, such as antibiotics, anticonvulsants, and nonsteroidal anti-inflammatory drugs
- Exposure to certain infections, such as herpes, mycoplasma, and fungal infections
- Exposure to ultraviolet radiation, such as from the sun or tanning beds
- Immune system disorders such as HIV or lupus
- A family history of erythema multiforme
Diagnosis and Treatment for erythema multiforme
In order to diagnose erythema multiforme, your doctor will likely take a biopsy of the affected skin. This will help to determine if the skin lesions are caused by an allergy or if there is an underlying infection.
Treatment for erythema multiforme typically involves avoiding any activity or exposure that may have triggered the skin condition. In some cases, your doctor may prescribe a topical or oral medication to treat the condition. In more severe cases, your doctor may recommend phototherapy or even oral corticosteroids.
Conclusion
Erythema multiforme is a skin condition that is considered to be an allergic reaction. It is characterized by formation of skin lesions that may have the shape of a target or bull's eye. The cause of erythema multiforme is not clear, but it is thought to be related to certain medications, infections, ultraviolet radiation, and some immune system disorders. Your doctor can help to diagnose erythema multiforme through a biopsy and then provide treatment options.