In chondrodermatitis nodularis, where do tender nodules typically occur?

In chondrodermatitis nodularis, tender nodules typically appear on the ear helix in males and the anti-helix in females. This condition is characterized by small, painful nodules that commonly arise in areas that experience pressure or friction, which is particularly common on the outer ear.

The distinction between the locations based on gender is noteworthy, as it affects the site of occurrence. Males are more likely to develop nodules on the ear helix due to their shorter haircuts or exposure to friction in that area, while females are more prone to develop them on the anti-helix. This reflects the anatomical differences and the types of pressure that can occur in these regions.

In contrast, the other locations mentioned, such as the forehead, cheek, and nose bridge, are not typical sites for this condition. Instead, they are more common for other dermatological issues or skin lesions, which do not align with the specific presentation of chondrodermatitis nodularis. The hallmark of this condition lies in its location and response to mechanical irritation, leading to the formation of nodules predominantly on the ears.