Thumb tenosynovitis is related to overwork, viral infection and other reasons, and usually cannot be cured by itself. If the symptoms are mild, you can take care of them by braking and massaging to alleviate the symptoms, and if the symptoms are serious, you need to consult a doctor in time. 1. life care: need to reduce the thumb activities, massage or hot compresses, promote blood circulation, relieve pain and swelling, and do a good job of warm measures to avoid cold, irritation of the joints, aggravate the symptoms. 2. Medical treatment: under the guidance of the doctor, you can choose ibuprofen extended-release tablets, diclofenac sodium tablets and other drugs to ease the pain. If the symptoms are serious and affect the activities of the fingers, you need to undergo surgery, such as tenotomy and decompression of tenosynovial sheath. If thumb tenosynovitis occurs, it is recommended to have a balanced diet, eat more protein-containing foods, eat more fruits and vegetables, and reduce spicy and irritating foods. If redness, swelling, and severe pain occur, it is necessary to consult a doctor in time.