Itches on bottom. You please help me!

Jock itch (tinea cruris) is a fungal infection that affects the skin of your genitals, inner thighs and buttocks. Jock itch causes an itchy, red, often ring-shaped rash in these warm, moist areas of your body. Reduce your risk of jock itch by taking these steps: Stay dry. Keep your groin area dry. Dry your genital area and inner thighs thoroughly with a clean towel after showering or exercising. Use powder around your groin area to prevent excess moisture. Wear clean clothes. Change your underwear at least once a day or more often if you sweat a lot. Wash workout clothes after each use. Be cool. Don't wear thick clothing for long periods of time in warm, humid weather. Find the correct fit. Make sure your clothes fit correctly, especially underwear, athletic supporters and sports uniforms. Avoid tightfitting clothes, which can rub and chafe your skin and make you more susceptible to jock itch. Try wearing boxer shorts rather than briefs. Don't share personal items. Don't let others use your clothing, towels or other personal items. Refrain from borrowing these items from others as well. Consult Dermatologist....