A hard callus like thing on the hand, according to the growth of different parts, may be caused by a variety of reasons, common causes include common warts, tendonitis, etc. If there is no redness, swelling, pain and other abnormal performance, in the premise that does not affect the patient’s daily life, you can continue to observe. If you’re looking for a new way to get the most out of your life, you’ll be able to get the most out of your life. Cryotherapy, pulsed dye laser and other physical methods of treatment are also available. Second, tenosynovitis: 1, the cause: if the long in the joint parts of the hand, consider the possibility of the existence of tenosynovitis, may be due to long-term labor in the hand joints, which in turn causes chronic strain caused by, or due to local inflammation caused by trauma, infection, etc.; 2, treatment: when the inflammatory lesions gradually deposited, easy to appear in the joint parts of the hand fibroplasia, osteophytes, etc., often accompanied by pain. If the symptoms are mild, there is no need for special treatment, local hot compresses, pay attention to rest can be, usually can recover on their own. If the symptoms are not relieved or are more severe, treatment with anti-inflammatory, pain relieving and blood-stasis activating drugs or local physical therapy is required under the guidance of a professional doctor. If necessary, closed treatment or surgery should be performed to avoid continuous aggravation of the condition.