What is a common cause of erythema multiforme?

Erythema multiforme is often associated with viral infections, particularly herpes simplex virus, which is one of the most common triggers for this condition. When the body responds to the infection, it can manifest as a hypersensitivity reaction, resulting in the characteristic skin lesions seen in erythema multiforme.

While allergic reactions and bacterial infections can lead to various skin manifestations, they are not the predominant causes of erythema multiforme. Environmental irritants often contribute to contact dermatitis rather than the specific type of skin reaction seen in erythema multiforme. Thus, viral infections are recognized as the key factor in the pathogenesis of this condition.