Hello There is possibility of infection leading to cellulitis. Cellulitis: It is inflammation of hand . It causes diffuse swelling especially over the back of hand. There will usually be redness and any movement will produce pain. Another possibility that some vegetative particle remained inside finger. Diagnosis will depend on good clinical examination, hence I urge you to consult doctor, preferably a surgeon. In the meantime I would suggest you the following which will definitely Limb elevation: Place the hand on two pillows while sleeping so that hand is above level of chest Analgesic: Ibuprofen will help. Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries. Wishing you good health. Take care.