For the past ~2 years I've been intermittently experiencing severe full-body sensation changes. I've been blown off by multiple doctors who've never gotten back to be about the symptoms, and they are debilitating when it happens. I'll give as detailed a description as I can.
I'm experiencing a severely dulled sense of taste, smell, pain, hunger, and temperature, with a massively increased sensitivity to pressure. My sense of touch is severely altered. Pressure, like that on the soles of my feet from walking around, or on my legs when I cross them, is intense, almost painful, and upon moving from a static position I experience a sensation I can only describe as feeling like I'm made of shattering plexi-glass. I've experienced depersonalization and derealization related to depression and PTSD, but this feels like a sensational version of those, where I feel distant from my bodily sensations. When I focus on something, and if I don't move, I lose sense of my bodily sensations almost completely and feel like I'm floating there without a body. I haven't experienced this in previous attacks, but I'm also currently very bloated feeling and have tons of little aches and pains that I don't usually have, mostly in the legs and lower abdomen.
The shortest attacks last about a day, the longest has lasted nearly a month. The first attack happened after smoking a copious amount of THC oil, and the most recent attack accompanied 2 days of taking diphenhydramine for a bout of insomnia, but most of the attacks have happened without me taking drugs of any sort. It increases in intensity the longer I'm awake and sort of "resets" when I go to sleep. When this happens, I can barely do anything. Even just sitting around is difficult because of the horrible sensations.
Just in case it's relevant, I have a slew of psychological problems. I've been diagnosed with PTSD, generalized anxiety disorder, major depressive disorder, and I've had multiple psychologists suggest asperger's, but I've never had it formally diagnosed. I'm also an insomniac and experience visual snow, though I have no known physical health problems besides being slightly overweight and unable to lose the weight, even on a strict diet. I've also been putting on weight recently, without any significant change to my diet. I'm not sure if any of these things are relevant, but I figured I should write them down just in case.