Cervical Radiculopathy: This condition involves nerve root compression or irritation in the cervical spine, which can cause pain, numbness, tingling, and burning sensations from the neck down to the arm and fingers, including the pinky. The symptoms can also include itching, especially if the nerve compression affects the dermatomes related to the inner elbow.

Ulnar Neuropathy: This condition affects the ulnar nerve, which runs from the neck down to the hand, particularly affecting the pinky and ring fingers. Symptoms can include pain, burning sensations, and itching, especially in the areas innervated by the ulnar nerve, such as the inner elbow.
Brachial Plexus Neuropathy: Involvement or compression of the brachial plexus, a network of nerves that come from the spinal cord and travel into the arm, can cause a variety of symptoms including pain, burning, and itching from the neck down to the arm and hand.

Multiple Sclerosis (MS): Although less common, MS is an autoimmune disease that affects the brain and spinal cord, leading to a wide range of neurological symptoms, including nerve pain, burning sensations, and itching. Early diagnosis is crucial for effective management.
Spinal Cord Compression: This is a serious condition that requires immediate medical attention. Compression of the spinal cord can cause pain, numbness, tingling, and weakness in the arms and legs, and can lead to permanent damage if not promptly treated.
Peripheral Neuropathy due to Systemic Disease: Certain systemic diseases, such as diabetes, can cause peripheral neuropathy, leading to nerve pain, burning sensations, and itching. Identifying and managing the underlying condition is essential.

Sjögren's Syndrome: An autoimmune disorder that can cause neuropathy, leading to symptoms such as nerve pain and itching. It is less common but should be considered in the differential diagnosis, especially if other systemic symptoms are present.
Neoplastic Processes: Rarely, nerve pain and associated symptoms can be the first presentation of a neoplastic process, such as a tumor compressing nerves. Although uncommon, this possibility should be kept in mind, especially if the symptoms are progressive or do not respond to typical treatments.