Related Experiment Video
Updated: Jun 26, 2026

Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies
Published on: October 7, 2021
Asymmetrical Brachial Plexus Involvement with Greater Auricular Nerve Involvement in Borderline Tuberculoid Leprosy:
Nimisha Kabra1, Rajesh Sinha1, Aditya A Jaiswal2
1Department of Dermatology, Indira Gandhi Institute of Medical Sciences, Patna, Bihar, India.
Abstract:
Leprosy, caused by Mycobacterium leprae , is known for mainly affecting the peripheral nerves. But in recent years, there is growing recognition that it can also involve the central nervous system, including the spinal cord and the brachial plexus. This broader understanding of nerve involvement highlights the importance of newer diagnostic tools like nerve conduction studies, high-resolution ultrasonography, and magnetic resonance imaging, which can help detect and assess these deeper structures and more complex manifestations. We present an intriguing case of a 27-year-old male diagnosed with borderline tuberculoid leprosy based on histopathology, who was found to have brachial plexopathy on nerve conduction studies and magnetic resonance imaging, along with involvement of the greater auricular nerve as revealed by high-resolution ultrasonography.
Related Concept Videos
Spinal Nerves: Plexus I
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
Local Anesthetics: Differential Sensitivity of Nerve Fibers
Spinal Nerves: Plexus II
The Lumbar Plexus
The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including the...
Arteries of the Upper Limbs
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies