Stiff-person syndrome

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Notion

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Science and technology

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What Wikipedia says

Stiff-person syndrome (SPS), also known as stiff-man syndrome, is a rare neurological disorder of unclear cause characterized by progressive muscular rigidity and stiffness. The stiffness primarily affects the truncal muscles and is characterised by spasms, resulting in postural deformities.

Excerpt from the Wikipedia article “Stiff-person syndrome”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Marta Rizzi et al, CC BY 2.5, via Wikimedia Commons.