Simulator (Non-organic disorder)

Simulator (Non-organic balance disorder) Age at test 49

Key Signs:
Typically these patients show results inconsistent with a balance disorder. For example, pitch sway velocity for two-legged stance eyes closed on foam is half that for eyes closed on a firm surface (see summary below). Here even for two-legged stance eyes open on a firm surface (see traces below) slow sway movements were observed. Such sway is almost never seen for patients with real balance problems. The patient cannot stand on 1 leg, eyes open, for more than 7 secs, but again, inconsistently, this patient can walk normally eyes closed and perform tandem steps normally. Thus typically for this type of patients, gait/stance ratios are low. Standing on two legs, eyes open, firm surface
Summary Data:
Notice how the Sensory Analysis results do not follow the typical pattern of visual less than somato-sensory less than vestibular. This indicates that the subject has inconsistent stance results. The same observation holds for the gait/stance ratios. Normally (and especially in patients with balance problems) trunk sway during gait is much larger during stance. The opposite effect is observed here.
Index:
Greater than normal.

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