What is a primary cause of intertriginous dermatitis?

Intertriginous dermatitis occurs in areas where skin rubs against skin, commonly found in folds such as under the breasts, in the groin, and in the armpits. The primary cause of intertriginous dermatitis is moisture trapped in these skin folds, which can often be increased by excessive sweating, known as diaphoresis. This moist environment creates an ideal condition for skin irritation and breakdown, ultimately leading to dermatitis.

While friction, diabetes, and infection may play supplementary roles or contribute to the severity and persistence of intertriginous dermatitis, the direct cause is predominantly related to the excessive moisture in these intertriginous areas. Diaphoresis exacerbates the condition by keeping the skin moist, increasing the likelihood of irritation and skin breakdown.