HI Lynda F,
Welcome to EmpowHER. Common causes of hand pain include injury or trauma, such as a boxer’s fracture of the hand, or from repetitive use, such as long periods of keyboarding, which can lead to tenosynovitis and carpal tunnel syndrome. Arthritis is another very common cause of hand pain. More serious conditions, such asdiabetes and peripheral neuropathy, can also cause pain or a burning sensation in your hand and fingers. It's important for your friend to see a specialist, that might be able to determined what is the cause of the pain.