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Coverage: 2020-01-01 onwards, with up to 300 results per query from PubMed and Europe PMC and separate limits on other sources. This is a selected index, not a complete literature search.

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ICD G25.82ORPHA:3198SPSD

Stiff Person Spectrum Disorder

Stiff Person Spectrum Disorder is a rare autoimmune neurological condition causing progressive muscle rigidity, painful spasms, and heightened sensitivity to stimuli. It is associated with antibodies against glutamic acid decarboxylase (GAD65) in the majority of cases. Misdiagnosis is common due to its unusual presentation. Treatment includes diazepam, baclofen, and immunotherapy.

This overview is general information, not an individual medical assessment. Research is selected automatically and may include mismatches. How we select and explain research.

297
Articles
13
Trials
Data refreshed
19 October 2026
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Common Questions

What is Stiff Person Spectrum Disorder?

Stiff Person Spectrum Disorder is a rare autoimmune neurological condition causing progressive muscle rigidity, painful spasms, and heightened sensitivity to stimuli. It is associated with antibodies against glutamic acid decarboxylase (GAD65) in the majority of cases. Misdiagnosis is common due to its unusual presentation. Treatment includes diazepam, baclofen, and immunotherapy.

How many clinical trials are available for Stiff Person Spectrum Disorder?

RareWays currently indexes 13 clinical trials for Stiff Person Spectrum Disorder, of which 1 is actively recruiting. These counts cover indexed trials across countries, not just your country. An Australian site does not necessarily mean that site is recruiting. Check locations, eligibility and current availability with the study team.

Where does the research data for Stiff Person Spectrum Disorder come from?

RareWays aggregates research from PubMed, Europe PMC, OpenAlex, and ClinicalTrials.gov. Data is refreshed automatically every day. All articles and trials link directly to their original sources.

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