Scrotal eczema and tinea cruris are two completely different skin diseases. Tinea cruris is caused by fungal infection in areas such as the groin and inner thigh, while scrotal eczema is caused by a variety of internal and external factors, with a complex etiology that may be related to hypersensitive reactions.

In terms of treatment, tinea cruris is primarily treated with antifungal medications, whereas scrotal eczema is treated with astringent and moisturizing medications applied topically, in conjunction with oral antihistamines or anti-allergy medications.