Reaction

Stiff Person Syndrome reporting signals

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 335 reports · 4 co-occurring drugs

As of the last recalculation, Stiff Person Syndrome appears in 335 FAERS reports alongside 4 co-occurring drug terms. The strongest observed disproportionality signal is HUMAN IMMUNOGLOBULIN G (PRR 128.9).

Important: FAERS is a spontaneous, voluntary, unverified reporting system. PRR and ROR identify reporting patterns for investigation; they are not incidence rates and do not establish causation.
DrugCo-reportsPRRROR
Human Immunoglobulin G38128.9129.2
Tizanidine1952.452.4
Diazepam Oral Solution (Concentrate)6151.851.9
Diazepam Oral6151.851.9

Related reactions

Data source: openFDA FAERS. See the OpenPV methodology and limitations.