僵人症候群，也作僵體症候群（英語：stiff person syndrome 或 stiff man syndrome[1]）是一種罕見的神經失調症狀[2]，病因不明，病人臨床表現為逐漸開始變得僵硬，肌肉強直等。僵人綜合症主要影響軀幹肌肉，此外還可能伴有痙攣，會導致姿勢畸形。慢性疼痛、機動性差、脊柱前凸是常見的症狀。
^Darras, Basil T.; Jr., H. Royden Jones, Jr.; Ryan, Monique M. Neuromuscular Disorders of Infancy, Childhood, and Adolescence. Elsevier Science. 3 December 2014: 188. ISBN 9780124171275（英語）. The stiff-man syndrome (SMS, also known as stiff-person syndrome) is a rare central nervous system autoimmune disease, but is likely underrecognized.
