I posted this in another E forum as well, as I have also sought input here, and try to not overload communities, but I have received no replies there, so here I go, as it is very frustrating. I hate to repeat my story, but basically, I am at a frustration point of not knowing whether I have SPS, migraine, or both. My sole symptoms is an olfactory aura. (which also manifests with a taste issue as well-distorts taste). Smell and taste are burn quality and unpleasant. Onset of aura is usually rather abrupt, but sometimes is also triggered by fried foods in an enclosed area (such as something being cooked on a skillet near me). I often have nasal congestion associated with it, but not always. I am on Topamax right now and on a decrease of Keppra with a goal of Topamax monotherapy. Neurologist is now maybe thinking it's more migraine but had thought it was SPS initially. But the auras persist and now they even last more than 24 hours sometimes. A night's sleep will usually alleviate an episode but even that is not always the case which is new. I've had the aura for four years now. I've not had one free month in four years. I was fairly sure for a while that yes, I have SPS, but I just don't know. I do have left temporal lobe slowing, and sharp waves and spikes on a 72 hour EEG, but no E activity was shown on it, and that was even when I had the aura occur during it. I don't get crashing headaches but have had major intermittent ones in the past, but not the type you hear migraineurs get. I do have a vague headache when the burn smell of the aura is in my face all day-it drains me so I just attribute that to fatigue and stress. Does anyone have any feedback at all? I am rather frustrated.