Frequent dampness on both sides of the thighs may be caused by physiological factors, ringworm, eczema and other factors. 1. Physiological factors: excessive obesity, and often in the hot and humid environment of life and work, will lead to physiological moisture on both sides of the thighs, no other clinical symptoms. 2. Ringworm: it may be related to fungal infection, which can make both sides of the thighs often moist, and accompanied by obvious itching, redness, flaking and other symptoms. 3. Eczema: it may be related to heredity, environmental factors, dietary factors, which may lead to the appearance of red pimples on the scrotum and the roots of the thighs, accompanied by oozing in severe cases, and also frequent wetness, accompanied by intense itching and tingling. Frequent dampness on both sides of the thighs and other abnormal manifestations may be the presence of disease factors, it is recommended to consult a doctor for appropriate examination and treatment to avoid adverse effects.