You should take some ibuprofen to help the swelling go down. Also you should apply a bag of ice to your hands. This will help with the inflammation as well. If your hands stay swollen, consult your doctor as soon as possible. Especially if you are in a lot of pain.
Swollen hands are usually from taking in too much sodium, caffeine, or pain from another part of the body. First, consume less products with sodium(salt), drink less caffeine. Soak