Carpal Tunnel Syndrome: This condition is characterized by numbness, tingling, and pain in the hand, particularly in the thumb, index, and middle fingers, which are innervated by the median nerve. The acute onset of pain that becomes chronic, along with electrical pain upon touching, is consistent with median nerve compression. The carpal tunnel syndrome can cause pain and discomfort in the carpometacarpal (CMC) joint area due to the referred pain pattern.

De Quervain's Tenosynovitis: This condition affects the tendons on the thumb side of your wrist. It can cause pain and tenderness, especially when forming a fist, grasping, or turning the wrist. The electrical pain upon touching could be related to the inflammation of the tendons.
CMC Joint Osteoarthritis: Osteoarthritis of the CMC joint, particularly of the thumb, can cause pain and stiffness in the joint. The acute onset might be less common, but chronic pain and discomfort are typical, and certain movements or pressures could elicit sharp or electrical pain.
Neuroma: A neuroma in the hand, such as a digital neuroma or a neuroma of the palmar cutaneous branch of the median nerve, could cause sharp, electrical pain, especially with pressure or touch.

Ganglion Cyst: Although often painless, a ganglion cyst near the CMC joint could cause pain, especially if it compresses a nerve. It's crucial to identify and treat to avoid nerve damage.
Infection or Abscess: An infection in the soft tissues near the CMC joint could cause acute pain and might lead to chronic issues if not properly treated. Electrical pain could be due to nerve irritation.
Tumor: A tumor, whether benign or malignant, in the wrist or hand could cause chronic pain and might produce electrical pain sensations, especially if it compresses or invades nerves.

Complex Regional Pain Syndrome (CRPS): This is a rare condition characterized by persistent burning pain and hypersensitivity after an injury or trauma. It could explain the electrical pain but would typically be associated with other symptoms like swelling, skin changes, and limited range of motion.
Sarcoidosis: This systemic disease can cause inflammation in various parts of the body, including the joints and nerves, potentially leading to chronic pain and unusual sensations like electrical pain in the CMC area, though this would be uncommon.
Peripheral Neuropathy: Certain types of peripheral neuropathy could cause pain and abnormal sensations in the hands, including electrical pain, though this would typically be part of a broader pattern of neurological symptoms.