There was marked distal weakness in the upper and lower limbs bilaterally. Upper limb reflexes were present, knee and ankle jerks absent and both plantar reflexes down-going. Vibration sense was impaired to both ankles, to the right wrist and was normal in the left upper limb. Proprioception was impaired in the fingers and to the right ankle and left knee. Pinprick was reduced up to the elbows and to the top of the thighs. Romberg’s sign was positive, and his gait was ataxic.