Which type of rash is associated with coccidioidomycosis?

Coccidioidomycosis, also known as Valley Fever, is a fungal infection caused by Coccidioides species. One of the notable cutaneous manifestations associated with this infection is erythema nodosum. Erythema nodosum presents as painful, red nodules that typically appear on the lower extremities. It is an inflammatory reaction often triggered by various underlying conditions, including infections like coccidioidomycosis.

The relationship between coccidioidomycosis and erythema nodosum highlights the body's immune response to the infection. This type of rash usually indicates a systemic reaction and is often seen in patients with a hypersensitivity response to the fungal antigens.

The other types of rashes listed are not characteristically associated with coccidioidomycosis. For example, while a maculopapular rash could appear in various infections, it is not specific to coccidioides. Similarly, diffuse urticarial rashes and vesicular rashes are linked with different conditions or infections and do not correlate with the immune response observed in coccidioidomycosis. Hence, erythema nodosum is the most relevant type of rash associated with this fungal