What PIRIFORMIS SYNDROME means: Piriformis Syndrome - is a rare neuromuscular disorder that occurs when the piriformis muscle compresses or irritates the sciatic nerve-the largest nerve in the body. The piriformis muscle is a narrow muscle located in the buttocks. Compression of the sciatic nerve causes pain-frequently described as tingling or numbness-in the buttocks and along the nerve, often down to the leg. The pain may worsen as a result of sitting for a long period of time, climbing stairs, walking, or running.
- Definition Pantothenate Kinase-Associated Neurodegeneration:
- Dictionary Associated Neurodegeneration - (PKAN), also known as Hallervorden-Spatz syndrome, is a degenerative disease of the brain, which can lead to parkinsonism. Neurodegeneration in PKAN is accompanied by piriformis syndrome.
- Definition Postherpetic Neuralgia:
- Dictionary Neuralgia - (PHN) is a painful condition caused by the varicella zoster virus in a dermatomal distribution (the area governed by a particular sensory nerve) after an attack of herpes zoster (HZ piriformis syndrome.
- Definition Primary Lateral Sclerosis:
- Dictionary Sclerosis - (PLS) is a rare neuromuscular disease characterized by progressive muscle weakness in the voluntary muscles. PLS belongs to a group of disorders known as motor neuron diseases. Motor piriformis syndrome.
- Definition Progressive Multifocal Leukoencephalopathy:
- Dictionary Multifocal Leukoencephalopathy - (PML) is caused by the reactivation of a common virus in the central nervous system of immune-compromised individuals. Polyomavirus JC (often called JC virus) is piriformis syndrome.