Abstract
Quantitative sensory testing (QST) is a standardized and formalized set of clinical sensitivity tests based on subjective (psychophysical) methods, which depends on the cooperation of the subject being investigated. Calibrated stimuli are used to measure the perception and pain thresholds, which provide information on the presence of sensory plus or minus signs. The QST equipment presented mimics natural thermal or mechanical stimuli. The rationale is to test for patterns of functional sensory loss or gain by simultaneous assessment of both cutaneous and deep pain sensitivity. The majority of QST parameters are normally distributed only after logarithmic transformation (i.e. secondary normalization). With QST a complete somatosensory profile can be obtained within 1h. The QST is a suitable method for characterizing the function of the somatosensory system in clinical trials and also in clinical practice as a diagnostic procedure.
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