I have no obligation to inform any airline that I suffer psychogenic non-epileptic seizures as there is no medication or medical assistance required. However as a curtesy I do inform airlines that I suffer PNES and I also have a ‘safe to fly certificate' from my GP. At Sydney airport I produced my letter to the rude Virgin employee service desk outside the airport. She would not take my GP's letter into account that I am safe to fly and obviously has no idea what PNES even is. I was held up outside for 15 mins, I had arrived 1 hour early as required and then she came back and told me I had to present to the service desk inside with my letter to get clearance to fly. If I had of waited in line for the inside service desk I would have missed my flight. I was flying from Sydney to Adelaide on Wednesday 19 December at 8.40am. Surely my GP's clearance letter that states I need no assistance in case of a seizure should be enough. I just ended up checking in online which lead me to get seated at the rear of the plane by the window. I also have bilateral neuropathy of the feet (no feeling) and with other airlines when I present to fly I am always seated at the front in an aisle as Adelaide Airport has rear entry/exit via stairs which I can not do. This is the first and last time I will fly with Virgin. Get your act together. PNES is triggered from PTSD and any stress or anxiety which I was left with dealing with your rude service desk employee.