The causes of dampness on both sides of the thighs include physiological factors, eczema, ringworm, contact dermatitis and so on. 1. Physiological factors: if the weather is too hot, wear pants too thick, then there will be too much sweat, easy to appear on both sides of the thighs wet phenomenon. 2. Eczema: if you consider eczema, the skin inflammatory reaction, acute phase can be manifested as oozing, thus the phenomenon of moisture. 3. Ringworm: If the thighs are infected by fungi, these fungi will invade the skin, and in severe cases, there may be oozing, and the symptoms of moist thighs will also appear. 4. Contact dermatitis: when the skin is contact dermatitis, i.e. contact with certain allergic substances, there can be oozing and blisters in the acute stage, hence the dampness. It is recommended to go to the hospital in time to check the phenomenon of moist thighs, to clarify the cause of the disease, and follow the doctor’s instructions for treatment.