Orthostatic tremor is a relatively rare and unique tremor that is isolated to the legs. This is characterized by a low amplitude, high frequency (14–16 Hz) tremor that is not present while sitting or when reclined but manifests only while the patient is standing still. The amplitude of the movements in orthostatic tremor is often so small that they are invisible to observers, and only appreciable when palpated. These patients often have difficulty initiating their first few steps, but once they start walking, their tremor resolves. These patients often adopt a wide-based cautious gait, with difficulty with tandem gait. Because of the difficult visualization of the tremor due to its low amplitude nature, historically, the symptoms reported by those with orthostatic tremor have been misdiagnosed as hysteria.