Differential Diagnosis for Painful Thump Pad
- Single most likely diagnosis
- Ulnar nerve entrapment or compression: This condition is a common cause of pain and discomfort in the area of the thump pad, also known as the hypothenar region, due to the proximity of the ulnar nerve.
- Other Likely diagnoses
- Ganglion cyst: A benign lump that can develop near joints or tendons, potentially causing pain in the thump pad area if it compresses nearby nerves or causes inflammation.
- Hypothenar hammer syndrome: A condition characterized by pain and tenderness in the hypothenar region, often due to repetitive trauma or injury to the area, which could affect the thump pad.
- Callus or blister: Repeated friction or pressure on the thump pad can lead to the formation of calluses or blisters, which can be painful.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Infection (e.g., abscess or cellulitis): Although less common, an infection in the thump pad area can lead to serious complications if not promptly treated, including spread of infection or sepsis.
- Tumor (benign or malignant): While rare, a tumor in the thump pad area could cause pain and should be considered to ensure early detection and treatment if present.
- Rare diagnoses
- Dupuytren's contracture: A condition that affects the palmar fascia, leading to nodules and thickened cords that can cause pain and contracture of the fingers, potentially involving the thump pad area.
- Glomus tumor: A rare, benign tumor of the glomus body that can occur under the nail or in other parts of the hand, including the thump pad, causing significant pain.