Dear service user, Good evening and thank you for writing to healthcaremagic. I have gone through your question and understand your concerns. It is very unfortunate to know that you suffered Guillain-Barré Syndrome (GBS) six years back. Approximately 85% of patients with GBS achieve a full functional recovery within several months to a year, although minor group patients often complain of continued symptoms, including fatigue. To help you in best way, your doctor needs medical history and neurological examination to find the cause of erectile problem in your case. Nerve damage is one of the reasons for erectile dysfunction, but one can confirm after clinical history and examination Let me know whether you achieve and maintain a good quality of erection in sleep, in the early morning, during masturbation but not at the time of coitus? If you are able to achieve and maintain erection in any one of the above mentioned situations than your problem is more likely psychological rather than physical. For this I advise you to see your neurologist who will definitely help you to come out of this problem. There are medicines and psycho sexual behavior therapies which can significantly improve erectile dysfunction, but they should be taken only under medical supervision. I hope this answers your query. If you have additional questions or follow up questions then please feel free to write to us. I will be happy to answer your questions. Wish you good health