What are its symptoms? The main symptoms caused by stiff person syndrome are spasms and rigidity of the torso and limbs.
Spasms can be triggered by loud noises, with the condition also causing heightened sensitivity to sound. Touch and emotional distress can also be felt more intensely as a result of the condition.
The spasms can be so severe they cause people to fall over or lead to difficulty walking and other disability. Stress and anxiety are also usually higher in those with the condition, particularly because of the unpredictability of spasms.
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