Stiff and swollen finger joints in the morning may be caused by tenosynovitis, osteoarthritis, rheumatoid arthritis. 1. Tenosynovitis: tenosynovitis is generally caused by trauma, cold, chronic strain and other reasons, if it occurs in the finger area, the patient will have soreness at the root of the finger in the early days, the symptoms are obvious in the morning, the patient will also appear localized swelling, redness, stiffness of the joints and other symptoms, the condition of the serious cases will also appear high fever, nausea, chills and other symptoms. 2. Osteoarthritis: Osteoarthritis is generally caused by obesity, trauma, heredity, age and other reasons, the patient’s early joints will be mild or moderate intermittent pain, more aggravated after the activity, the joints will be stiff when getting up in the morning, usually lasts for a few minutes to ten minutes, and some patients will also appear joint swelling, weakness, muscle atrophy and other symptoms. 3. Rheumatoid arthritis: rheumatoid arthritis belongs to the rheumatic immune disease, early joint pain and pressure, and in the morning when the joints will feel stiff, with the development of the disease, the patient will appear joint swelling, fever, fatigue, weakness, general malaise and other symptoms. There are many reasons for the stiffness and swelling of the finger joints in the morning, the specific reasons need to go to the hospital to determine the cause, after diagnosis under the guidance of the doctor for treatment.