Peripheral Neuropathy: This condition is characterized by damage to the peripheral nerves, which can cause numbness, tingling, and weakness in the hands and feet. It is a common condition that can be caused by various factors such as diabetes, vitamin deficiencies, or trauma.

Radial Neuropathy: Compression or damage to the radial nerve can cause numbness and tingling in the hand, particularly in the back of the hand and the fingers.
Peroneal Neuropathy: Compression or damage to the peroneal nerve can cause numbness and tingling in the toes and feet.
Cervical Radiculopathy: Compression or damage to the nerve roots in the cervical spine can cause numbness and tingling in the hand and arm.
Lumbar Radiculopathy: Compression or damage to the nerve roots in the lumbar spine can cause numbness and tingling in the toes and feet.

Multiple Sclerosis: A chronic and often disabling autoimmune disease that affects the central nervous system, causing numbness, tingling, and weakness in various parts of the body.
Guillain-Barré Syndrome: A rare autoimmune disorder that causes rapid-onset muscle weakness and numbness, often starting in the feet and toes and ascending to the hands and arms.
Spinal Cord Compression: Compression of the spinal cord can cause numbness, tingling, and weakness in the hands and feet, and can be a medical emergency if not treated promptly.

Vitamin B12 Deficiency: A deficiency in vitamin B12 can cause numbness and tingling in the hands and feet, as well as other neurological symptoms.
Sjögren's Syndrome: An autoimmune disorder that can cause numbness and tingling in the hands and feet, as well as other symptoms such as dry eyes and mouth.
Lyme Disease: A bacterial infection that can cause numbness and tingling in the hands and feet, as well as other symptoms such as fever and headache.
Charcot-Marie-Tooth Disease: A group of inherited disorders that affect the peripheral nerves, causing numbness, tingling, and weakness in the hands and feet.