Ultrasound can visualize the occipital nerves and surrounding tissues, detect focal swelling or entrapment, and guide diagnostic or therapeutic nerve blocks. However, occipital neuralgia is primarily a clinical diagnosis; ultrasound alone cannot definitively confirm it. MRI or CT may be needed to exclude structural causes, and response to a diagnostic nerve block helps establish the diagnosis.

The occipital region is the back part of the skull that overlies the occipital bone and includes the external occipital protuberance. It contains the occipital lobes of the brain responsible for visual processing and provides attachment sites for neck muscles. Clinically, it is often involved in headaches, trauma-related injury, and tenderness from muscle strain or nerve irritation.

Pain in the occipital region commonly arises from occipital neuralgia (irritation of the occipital nerves), cervicogenic headache from neck joint or muscle problems, muscle strain or tightness in the neck and shoulders, cervical spine conditions (degenerative arthritis, disc disease), trauma or nerve entrapment. Migraines and referred pain from temporomandibular or vascular causes can also produce pain at the back of the head.

Occipital neuralgia is diagnosed primarily by clinical history and exam: paroxysmal, stabbing or burning pain in the occipital scalp, often triggered by neck movement and tenderness over the greater/lesser occipital nerves. Reproduction of pain with nerve palpation and temporary relief from an occipital nerve block support the diagnosis. MRI or other imaging rules out structural causes; refer to neurology or a pain clinic as needed.

Yes. Occipital lymph nodes are superficial and can be assessed with high‑frequency (7–15 MHz) linear ultrasound. Sonography evaluates size, shape, hilum, cortical thickness and vascularity to help distinguish reactive from suspicious nodes. Ultrasound also guides fine‑needle aspiration or core biopsy if needed. Deep or obese patients may limit visualization, in which case CT or MRI can be considered.

Neurologists diagnose occipital neuralgia primarily from history and exam: sudden, sharp, shooting or electric-shock headaches in the occipital region, tenderness over the occipital nerves, and pain reproduced by palpation or neck movement. MRI or cervical imaging rules out structural causes. A diagnostic occipital nerve block with local anesthetic that temporarily relieves pain helps confirm the diagnosis; routine nerve conduction studies are usually unhelpful.