“…20,24 Mulder's click test has long been established as a reliable test for the presence of PDN. 20,21,24,27 Most cases of PDN can be diagnosed clinically 5,8,15 with those being considered for surgical or invasive intervention having the diagnosis confirmed by ultrasound or magnetic resonance imaging (MRI) if necessary. 9 This said, clinical tests may be just as useful especially in detecting smaller lesions which can be missed by ultrasound and MRI, yet which cause the sufferer just as much discomfort.…”