Sweat spot is the same disease as lichen planus. Sweat spot, also known as lichen planus, is a superficial fungal skin disease caused by Malassezia furfur infection. When the skin is moist and sweaty, lichen planus tends to appear, so it is also called sweat spot. Since lichen planus is caused by a fungal infection, treatment is mainly with topical antifungal medication. It is important to keep the skin clean and avoid excessive sweating to avoid fungal growth. Some people who are obese, anemic or have high blood sugar are prone to develop lichen planus. You can effectively reduce the appearance of lichen planus. The main topical drugs commonly used to treat fungi are ketoconazole, bifenazole, terbinafine, etc. You can also use ketoconazole lotion when bathing and stay on your body for 5-10 minutes and then rinse it off.