There are many kinds of ringworm on the neck, and the common ones are neurodermatitis, tinea corporis, and lichen planus, among which tinea corporis and lichen planus are caused by fungal infections, and you should pay attention to bathing, changing clothes, drying clothes and bedding, and daily ventilation of the room in your daily life.1. Neurodermatitis: If it grows on the back side of the neck, is patchy, and is a moss-like change of the skin caused by a single or multiple flat papules, accompanied by intense itching. It is very rough and hypertrophic to the touch, and can be considered as neurodermatitis. It is generally closely related to neurological and psychiatric factors and is commonly seen in women aged 30-50. 2. Tinea corporis: If small papules and pustules are found on the skin of the neck developing into red patches with clear borders covered with scales that gradually develop from the center outward, accompanied by varying degrees of itching, it is likely to be tinea corporis. It is usually caused by direct or indirect contact with fungi, and long-term use of glucocorticoids or immunosuppressive drugs predisposes to ringworm. Tinea corporis is highly contagious and is usually spread by direct contact with the patient or indirect contact with the patient’s clothing; 3. Tinea corporis: Tinea corporis also belongs to a common type of ringworm of the neck and is a fungal skin infection caused by the fungus Malassezia marcescens that occurs in young and middle-aged men. It usually appears as a dotted or flaky rash with clear borders resembling a circle centered on the pores, covered with scales, and in a few cases, accompanied by itching, and the color is related to skin color and sun exposure.