Why does the top of your hand hurt and sharp pains up my arm?

1. Tendonitis:

- Repetitive motions, such as typing, gripping, or using tools, can inflame the tendons on the top of your hand, causing pain and sharp pains up your arm.

2. Carpal Tunnel Syndrome:

- Compression of the median nerve, which runs from the forearm to the hand, can cause pain, numbness, and tingling in the hand and arm.

3. Arthritis:

- Conditions such as osteoarthritis and rheumatoid arthritis can cause inflammation, pain and swelling in the joints of the hand and wrist, leading to sharp arm pain.

4. Nerve Injuries:

- Damage to the nerves that supply the hand and arm can result in pain, numbness, and tingling sensations that may extend up the arm.

5. Fractures:

- Broken bones in the hand or arm can cause severe pain and tenderness, often accompanied by swelling and bruising.

6. Muscle Strain:

- Overstretching or tearing of the muscles in the forearm or hand can lead to pain and sharp sensations that may radiate up the arm.

7. Infection:

- Bacterial or viral infections can cause inflammation and pain in the hand and arm, potentially leading to sharp pain.

8. Raynaud's Syndrome:

- A condition that affects blood flow to the fingers and toes, causing them to become cold, numb, and painful, especially when exposed to cold temperatures.

9. Ulnar Nerve Entrapment:

- Compression of the ulnar nerve, which runs from the elbow to the hand, can cause numbness, tingling, and pain on the inside of the forearm and hand.

10. Thoracic Outlet Syndrome:

- A condition caused by compression of the blood vessels and nerves in the upper chest area, leading to pain in the neck, shoulder, arm, and hand.