G50-G59: Nerve, nerve root and plexus disorders

G56: Mononeuropathies of upper limb

Mononeuropathies of the upper limb are a group of conditions that affect specific nerves in the arm and hand. Typically, these conditions arise due to damage or injury to a single nerve, such as from compression, trauma, or repetitive strain. Common symptoms can include tingling, numbness, pain, and weakness, generally localized to the area served by the affected nerve. These symptoms can develop gradually over time as the nerve damage progresses or may come on suddenly, especially in the case of trauma. As they progress, mononeuropathies can interfere with normal functioning in the upper limb, impacting activities that require fine motor skills, strength, or sensation. The musculoskeletal, nervous, and sometimes vascular systems are commonly involved in these conditions. It's important to note that various nerves can be affected, leading to diverse symptom presentations depending on the specific nerve damaged.