<s>[INST] under side of forearm in 6yr old had a fall today. Put hand out to stop fall some soreness in wrist and thumb area. large bruise on arm with white hard lump under. Wrist and arm swollen and tender when pressed but child can put pressure and still write [/INST] Good afternoon..!!A painful swollen wrist might be due to fracture of the wrist or forearm bones.So it's better to visit pediatric orthopedician for further evaluation and management.Thank you, have a nice day..!!! </s>