hi, thank you for your query. the infection you are suffering from is due to group of fungi called dermatophytes the infection on skin of groinis called tinea cruris or jock itch it is a common problem but a persistant one which requires the bi fold approach of treating the current problem with taking measures for prevention of further infection. treatment includes topical agents such as miconazole, terbinafine, clotrimazole, ketoconazole, or tolnaftate applied twice daily until symptoms resolve even after that that the cream should be used for 1 week to prevent any further infection. oral anti fungals can also be taken simultaneously Preventive measures include- 1.Avoid sharing clothing, sports equipment, towels, or sheets. 2.Washing clothes in hot water with fungicidal soap after exposure to ringworm. 3.Avoid walking barefoot; instead wear appropriate protective shoes in locker rooms and sandals at the beach. 4.you can use antibacterial and anti-fungal soap or one that contains tea tree oil 5.Avoid touching pets with bald spots as they are often carriers of the fungus.