Swollen hands can be caused by a variety of factors, including injuries, infections, allergies, inflammation, and underlying medical conditions like kidney or liver disease. Some common causes of swollen hands are:

• Fluid retention: Swelling in the hands can be caused by fluid retention, which can be due to a variety of factors such as staying in the same position for too long, eating too much salt, or being overheated.

• Arthritis: Arthritis can cause swelling in the hands, as well as pain and stiffness.

• Circulatory problems: Poor circulation is a common cause of hand and finger swelling and occurs due to natural aging processes in the body. Over time, veins start to lose their elasticity and become more stiff, which makes blood return from the extremities more difficult. This leads to blood accumulated in the hands and feet, which may result in swelling.

• Infections: Swelling in the hands can be a sign of an infection, such as a finger infection or cellulitis.

• Blood clots: A blood clot can cause sudden and severe swelling in the hand, which may be accompanied by pain, fever, or difficulty moving the affected hand.

It is important to seek the advice of a healthcare professional if you are experiencing hand swelling. A proper diagnosis can help determine the underlying cause of the swelling and facilitate the development of an appropriate treatment plan. If the swelling occurs suddenly, is severe, and is accompanied by intense pain, fever, or difficulty moving the affected hand, it could be a sign of a severe infection or blood clot, and prompt medical attention is necessary.