Morvan syndrome: after scrotal sac drainage and chemical instillation in hydrocele.

We have described the occurrence of Morvan syndrome (MoS) after scrotal tap and injection of sclerosing agent for the treatment of hydrocele in 5 male. The mean age was 43.2 years, and the gap between the procedure and development of clinical features suggestive of MoS was 1.5-3 months. The neurophysiology studies demonstrated hyper excitability of peripheral nerves. In addition, autonomic dysfunction, severe insomnia, and neuropsychiatric features were observed. Significant VGKC-complex/CASPR-2 antibodies titer were present in all cases. Symptoms resolved spontaneously within 6 months of onset.