Investigations
1st investigations to order
clinical diagnosis
Test
Typically no further ancillary tests are required if the remainder of the neurological examination is normal.
Result
history and clinical examination suggestive of TS
Investigations to consider
brain MRI
Test
Should be ordered only to evaluate brain structure and pathology related to a suspected neurological lesion found on neurological examination (includes testing of cranial nerves, muscle strength, sensory modalities, coordination, gait, and mental status).
Result
typically normal in TS
EEG
Test
Should be ordered only to evaluate suspected seizure activity obtained through the patient's history or examination.
Result
typically normal in TS
premonitory urge for tics scale (PUTS)
Test
A quantitative pictorial rating scale that can be used with younger patients who may find it difficult to express descriptions of premonitory sensations.
Result
based on self-report scale
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