The male thigh root is itchy and black

If the inner thigh of a man turns black and itchy, it is most likely tinea cruris or a bacterial infection. Of course, this is not a serious disease, as long as you go to the hospital for immediate treatment. Here is a reminder that if it is definitely tinea cruris, it is best to do a thorough cleaning, especially underwear is recommended to be changed to avoid cross infection.

Most of the tinea cruris is caused by bacteria such as Trichophyton rubrum, Trichophyton barbae and Trichophyton floccosum. They mainly infect the superficial tissues of the body, so they are also called superficial bacteria. Their shapes can be divided into large conidia, microconidia and fungi. The suitable temperature for growth and development is 20℃～27℃. It can grow well in 1～2 weeks according to the training. Very few tinea fungi are not easy to be trained artificially, such as Trichophyton versicolor and Rhinosporea. Generally, bacteria are more resistant to chemicals such as acid, alkali, alcohol, etc. than pathogens. Experimental personnel often use this point to kill the fungi in the skin and specimen collection before bacterial training. Tinea cruris can be transmitted through sexual intercourse or other direct contact, such as sharing a bed or direct contact with infected animals such as dogs, cats, rabbits, etc.; it can also be transmitted through indirect contact with clothing and supplies that have been contaminated by the patient's environment; it can also be caused by tinea cruris on the hands and feet; it can also be caused by long-term use of hormones or diabetes and chronic active hepatitis.

The disease often occurs in summer and hot, humid and cold areas. Males are more likely to get the disease than females.

Superficial bacteria parasitize in the thin stratum corneum of the human or animal skin, and their metabolites act as toxins or allergens to cause fungal infections of the skin. Tinea cruris often occurs in the genitals, groin, vulva and anus. Its harm is mainly manifested as small rashes or blisters that first appear on the upper side of the thigh and in line with the scrotum, and then spread to the periphery, causing semi-circular harm. The edges of the lesions are clear and raised. After the inflammation subsides, the lesions become brown-red and accompanied by desquamation. It is often on one side, and unilateral symmetrical distribution can also be seen. Because this area is prone to sweating, dampness, and friction, the inflammation phenomenon is generally more severe than corporis corporis. Men's tinea cruris is more severe on the left side, with a larger total area of ​​skin damage, often accompanied by severe itching, sometimes spreading to the scrotum and genitals, and in more severe cases, it can spread to the front and back. Women's tinea cruris often invades the buttocks, pubic area, and even affects the lower abdomen and waist, causing large-area rashes.

According to the symptoms and the white scales at the location of the damage, a diagnosis can be made by bacterial examination. It should be distinguished from psoriasis, pityriasis rosea, seborrheic dermatitis, etc. Treatment: Mainly oral medication. For cleaning acne, patients can apply spiny seed benzoic acid cream, clotrimazole suppository cream, 2% miconazole cream or 1% econazole cream twice a day for 2 to 4 weeks. Because the skin on the abdomen is delicate, external application of irritating tinea medicines should be avoided. For difficult-to-eliminate cases with widespread skin damage, severe inflammation, and poor treatment effects, oral griseofulvin tablets, 0.6 grams per day, for 2 to 4 weeks, or ketoconazole tablets, 0.2 grams per day, for 4 to 8 weeks can be considered.

In traditional Chinese medicine, 5% sulfur ointment can be applied externally, twice a day for 2 to 4 weeks. Tinea cruris refers to a skin disease caused by bacterial infection of the inner thigh, perineum, and buttocks. The bacteria of tinea cruris can be spread through underwear, towels, etc., and can also be spread through sexual intercourse, so tinea cruris is also included in the list of sexually transmitted diseases. But we must not think that tinea cruris must be transmitted through sexual intercourse. In clinical medicine, more than 80% of tinea cruris is transmitted through non-sexual intercourse.