Tinea capitis can be divided into three types 1. Blistering and scaling type The onset of the disease is usually single, starting with a part of the palm of the hand, especially the palm, the palm surface of the index finger and ring finger, the side and the root, starting as a pinhead-sized blister with thick and shiny walls and clear liquid inside, the blisters are clustered in groups or sparsely distributed, itching, the blisters dry up and then flake and gradually spread around and expand to form a ring or multi-ring-shaped damage with clear edges. The course of the disease is chronic and lasts for years until it involves the entire palm and spreads to the back of the hand and nails, and even to the opposite palm. Sometimes the blisters can be secondary to infection to form pustules. 2. Hyperkeratotic type Prevalent on the palmoplantar area (or heel in the case of tinea pedis). The skin is mostly dry, with thickened keratin, rough and flaky surface, deepened texture, and easily cracked, and the lesions can spread to the back of the hands (dorsum of the feet). Generally no itching, pain when there is chafing. 3, impregnated erosion type, also known as the inter-rub type, mostly in the finger (toe) seam. Performance for the skin impregnation white, the surface is soft and easy to peel, revealing flushed vesicles or even fissures. There are varying degrees of itching and a foul odor when secondary bacterial infection occurs. The disease is often predominantly of one type or several types at the same time, and can also shift from one type to another, as in the summer with the blistering and scaling type, and in the winter with the hyperkeratotic type. Incomplete treatment is the main reason for the persistence of the disease.