I am specifically interested in psychophysiological insomnia: essentially, somatized tension and learned/reinforced sleep-preventing associations that, of course, result in insomnia. Note: I'm not referring to primary sleep disorders, substance abuse related insomnia, nor those cormorbid with psychiatric, neurological, or medical disorders like, chronic pain or even fibromyalgia. I am wondering if this specific form of insomnia (i.e., psychophysiological insomnia) can mimick the symptom profile of other physical maladies. I would think its presentation would be different than other forms of insomnia, given different etiologies, but, I don't know... Thanx, psyengine. Not really what I meant. Said in another way, I am wondering what the physical effects are of psychophysiological insomnia (aside from fatigue--kind of an obvious one), but, specifically, whether these could mimic any particular physical condition. For example, I imagine extreme, chronic psychophysiological insomnia, depending on the individual, presenting not only as "fatigue", but, as say, a primary eating disorder, gastritis, or migraine, perhaps. See, I know that many "sleep disorders" are cormorbid or indicative of, for instance, long-standing physical illnesses, in the case of some primary sleep dysfunctions or psychiatric issues. However, I wonder, given psychophysiological insomnia is a said conditioned response or a reflection of "hyperarousal" (which can remain even when the initial stressor that, perhaps, precipitated the sleep issue, is long gon) whether the lack of sleep, in this case, could, resemble a physical illness, instead of a "sleep disorder", per se. So, instead of the sleep issue being etiologically related to a psychiatric or a physical illness, whether the reverse could be true, and if so, what does the physical sxs profile look like? Thanx, Fr. Al. I know, I know, my q was worded very poorly. It was very late when I posed this Q and I really should have just gone to bed instead of playing on Y!A. My brain was complete mush. Ha-ha-ha. Anyhow, I certainly didn't want to imply that "mental diagnoses" were all in one's head. Trust me when I say, that is NOT something I would say. In fact, where I live, there IS no stigma regarding these illness. There just isn't. Anyway, all I wanted to know with this inquiry was whether an insomnia problem could be mistaken as a physical illness. I rattled on about psychophysiological insomnia because I thought it would be a better instance (that the others) of when this might be possible. I imagined a patient complaining of primarily headaches and never being asked the Q: "how do you sleep?" In reality, the insomnia is causing the headaches, so they are treated, instead of the insomnia. I wondered what kinds of physical problems lack of sleep could produce/mimick. Grannyjill: Good idea :-). Thanx :-). Fr. Al: "physical problems" as in those that can not be related to an underlying primary DSM-IV-TR label. Can severe chronic insomnia cause gastritis, migraines, eating disorders etc?...