Many conditions can cause itching in the crotch area. Jock itch is a fungal infection also known as tinea cruris. Scrotal eczema is also a possible cause of itching for many men. Eczema, or dermatitis , is a term that encompasses a few skin conditions.
What's that red rash around your groin and scrotum?
Rashes in the Groin and Anal Areas | HealthLink BC
Learning About Preventing Rashes in the Groin Area in Men
Worried about a red lumpy rash around your groin and scrotum? If an itchy rash rears its head after a particularly sweaty workout, it sounds like you might have jock itch, also known as tinea cruris. The good news is jock itch is not a sexually transmitted infection STI , it is a common skin complaint and nothing to worry about. The main concern is usually the itching and uncomfortable chafing associated with the rash.
Tinea cruris is a dermatophyte , a type of fungal infection of the groin region in either sex,  though more often seen in males. This condition is most clearly identified by the ring like rash which forms. It is typically a red or brown irritated patch of skin with clear rings. The infection causes itching or a burning sensation in the area which is affected. Most likely originating from the groin, thigh skin folds or anus.