Second, the etiology and pathology of tinea cruris
Tinea cruris is caused by fungi, which are parasitic on the stratum corneum of human epidermis. The stratum corneum is rich in keratin, which is an essential substance for the survival of dermatophytes. Wet and warm conditions are most suitable for its survival and spread, especially Trichophyton floccosum and Trichophyton gypsum are more suitable for wet reproduction in the skin, so these two pathogens are the most common. Therefore, tinea cruris, like other tinea diseases, must have an environment suitable for the growth and reproduction of fungi, and also have the source of fungi, that is, the source of infection.
1. If you are infected with tinea cruris, you are infected from other parts of yourself. Generally, patients with tinea cruris mostly occur in men, because the inner thighs of men are close to scrotum, especially obese people are completely stuck together, and the secretions and dirt on them are not easy to remove, and the local temperature is high and humid, which is very suitable for the growth and reproduction of fungi, so men are prone to tinea cruris.
2. Sexually transmitted tinea cruris: It accounts for 70% of patients with tinea cruris, so it is also classified as a "sexually transmitted disease" in medicine. There is little difference between male and female patients with tinea cruris infected through sexual contact, and the onset is mainly around the genitals.
Third, the symptoms of tinea cruris
1. At first, tinea cruris is a red spot with a clear edge and a slight uplift, which gradually expands, with scales falling off and itching consciously, and gradually changes from red to purple, brown or skin color.
2. If tinea cruris is not treated in time, the damage will spread to the periphery, and the center of the lesion will gradually heal automatically and develop to the periphery. Erythema edge inflammation is obvious, there may be active rash, blister, scab and even erosion on it, and the center will self-heal to form a ring or a half ring. "The Great Wall is built on the ass", which shows that there are squamous plaques outside the scrotal folds.
3. Temporary pigmentation is left after healing.
4. Chronic disease course, long-term lesions can be lichen-like changes.
Iv. Precautions for tinea cruris:
1. Wash and change underwear frequently. Wash the vulva and thighs every day to keep them clean. Conducive to recovery.
2. Actively treat tinea in other parts of the body, such as tinea of hands and feet, onychomycosis, tinea corporis, etc., so as to facilitate radical cure and prevent recurrence.
3. Avoid spicy food and hair, quit smoking and drinking, have a light diet and eat more fresh vegetables and fruits.
Prevent tinea cruris (1), lead an honest and clean life, and do not have improper sexual relations with others. Don't use other people's underwear, underwear and toiletries.
(2) Change underwear frequently, keep vulva clean, wash clothes and quilts frequently.
(3) Reduce sweating and promote evaporation of thigh root. Try to keep the perineum dry and wear loose and suitable underwear, not too tight.
(4) If you have onychomycosis, Liriodendron chinense and tinea, you should actively treat it to prevent it from spreading to the vulva and thighs.
If tinea cruris is not treated, the possibility of self-healing is very small, and folliculitis can be secondary to scratching infection. However, the main disadvantage of using conventional therapeutic drugs is that they can't penetrate under the skin and can't completely kill pathogenic fungi, so they often recur, and local scleroderma can also occur after repeated medication. Scleroderma occurs in scrotum, which is easy to cause related reproductive and sexual dysfunction. We must choose drugs carefully to treat tinea cruris.
Five, the conventional treatment of tinea cruris:
Many patients like to use corticosteroids after getting tinea cruris, which obviously has the effect of relieving itching quickly. In fact, this is a wrong approach. Tinea cruris is caused by fungi, and hormones can not only kill fungi, but also promote their growth and reproduction, so it is definitely wrong to treat tinea cruris with hormones. This truth seems simple, but in daily life, people often go astray on this issue.
Common western medicines for tinea cruris are mainly external antifungal drugs. It is advisable to clean the local area before taking the medicine and apply talcum powder on the affected area after taking the medicine. Traditional Chinese medicine believes that tinea cruris is related to the downward flow of damp heat in the liver meridian, and the treatment should be clearing away heat and promoting diuresis, and Longdan Xiegan Pill can be taken orally.