Fig. 3From: Differences in peripheral neuropathy in xeroderma pigmentosum complementation groups A and D as evaluated by nerve conduction studiesFollow-up hearing and sural sensory nerve studies. A Patient XPA3 (neurological involvement) B Patient XPD4 (neurological involvement). Age of patient (X axis) plotted versus hearing (dB HL) (left Y axis) and sural amplitude (μV) (right Y axis). Normal hearing:4F-PTA ≤ 20 dB HL. Normal NCS findings: sural sensory ≥6 μV, fibular motor ≥2.5 mVBack to article page