Most groin itch is caused by ringworm, a skin disease caused by fungal infection of the inner femur, perineum, and buttocks, which is a neuropsychiatric dermatosis, a skin neurological disorder. How is itchy groin caused by dermatitis and scabies examined? The diagnosis of typical jock itch is not difficult and is based mainly on the presence of symmetrical or unilateral occurrence of well-defined circumscribed inflammatory lesions on the pubic femur with disseminated papules, blisters, and scales on the edges, and fungus can be detected by taking the scales and blisters for direct microscopic examination, which has a high positive rate. The main symptom is significant local itching. The disease is prone to recurrence. It is mostly transmitted through contact with patients with ringworm, through cats and dogs, indirectly through clothing and utensils, or by scratching and spreading the infection. In summer, when the climate is hot and humid, the human body sweats a lot, especially in the femur, and if you do not take a bath in time or wear tight underwear with a lot of sweat that does not evaporate in time, you are prone to get this disease. In addition, patients suffering from diabetes, excessive leukorrhea, etc., as well as long-term oral or topical application of a large number of broad-spectrum antibiotics or corticosteroids, are also susceptible to ringworm. In terms of incidence, it is mainly in young people and more in men than in women. The disease tends to occur in the summer, and the humid or hot climate tends to aggravate the condition and remit or heal it in the winter.