there are a lot of casues for tremors and pain and shaking of hands or legs .. here I provide you a detailed causes list. Peripheral neuropathy Peripheral neuropathy is a nerve condition of the extremities causing numbness, tingling, and pain. Finger injury Symptoms of finger injuries vary but can include pain, numbness, swelling, and deformity. Carpal tunnel syndrome Carpal tunnel syndrome symptoms include burning or tingling in the hand and fingers, numbness, pain and more. Benign essential tremor Benign essential tremor can cause shaking of the hands and forearms and a quivering voice. Low blood sugar (hypoglycemia) Low blood sugar, or low glucose levels, causes shakiness, anxiety, clammy skin, irritability, hunger, and more. Generalized anxiety disorder Generalized anxiety disorder is a condition in which a person has nearly constant anxiety. Vitamin B12 deficiency Vitamin B12 deficiency symptoms include fatigue, pale skin, weakness, sleepiness, numbness, weakness, and more. Multiple sclerosis Multiple sclerosis is a disease of the nervous system causing difficulties with balance, speech, and movement. Scleroderma Scleroderma is an uncommon immune disorder that causes collagen to build up in the tissue, making it harden. Panic attack When someone has a panic attack, that person feels a sudden, intense fear that can t be controlled. Tendinitis Tendinitis symptoms include muscle and tendon pain or stiffness close to a joint, and pain with movement. Hyperventilation Hyperventilation is rapid or shallow breathing usually caused by stress or anxiety. Parkinson disease Parkinson s disease is a disorder of the nervous system causing tremors stiffness and slow movement. Median nerve injury The median nerve, which runs through the arm and hand, can cause swelling pain and numbness if injured. Ulnar nerve injury Damage to the ulnar nerve causes swelling, pain and numbness in the forearm, hand, and ring and little fingers. Diabetic neuropathy Diabetic neuropathy is a nerve condition of the extremities causing numbness, tingling, and pain. Wernicke syndrome Wernicke s encephalopathy can cause confusion, lack of muscle coordination, and vision problems. Finger infection Symptoms of a finger infection can include redness, swelling, burning, pain, pus, or fever. Paronychia Paronychia is a skin infection that causes pain and swelling around the fingernail or toenail. Tetany Tetany is a mineral imbalance causing painful muscle cramps and twitches in the hands, feet, face, and larynx. Stroke A stroke occurs when blood and oxygen to the brain are cut off, and causes numbness, confusion, and more. Transient ischemic attack (mini-stroke) Transient ischemic attacks cause headache, numbness, tingling, or weakness in the face, arm, or leg, and more. Broken (fractured) finger Broken, or fractured, fingers are among the most common injuries and can cause pain, swelling and bruising. Cervical (neck) spinal stenosis Cervical spinal stenosis is a spinal condition causing pain, weakness, or numbness in the arms, legs, or neck. Cervical (neck) spondylosis Cervical spondylosis is arthritis of the neck pain and stiffness the neck, shoulder, arm, or chest. Cervical (neck) herniated disk A cervical herniated disc is a spinal condition causing and pain or numbness in the neck, shoulder, and arm. Osteomyelitis (bone infection) Osteomyelitis is an infection of a bone that causes pain, swelling, and redness. Chemical burns A chemical burn can cause symptoms ranging from burning and blisters to pain and shortness of breath. Burn (heat or fire) Burns caused by heat are called thermal burns and can cause pain swelling, skin changes, blisters and more. Frostbite Frostbite happens when the skin and the tissue freezes, causing pins and needles, numbness, and pain. CREST syndrome CREST syndrome is a rare autoimmune disease that causes tissues to harden throughout the body I hope you happy with information kindly rate it. thank you.