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Hallucinogen Persisting Perception Disorder (HPPD) Support Forum


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  1. Check the symptoms: https://en.wikipedia.org/wiki/Anticholinergic Confusion Disorientation Agitation Euphoria or dysphoria Respiratory depression Memory problems[13] Inability to concentrate Wandering thoughts; inability to sustain a train of thought Incoherent speech Irritability Mental confusion (brain fog) Wakeful myoclonic jerking Unusual sensitivity to sudden sounds Illogical thinking Photophobia Visual disturbances Periodic flashes of light Periodic changes in visual field Visual snow Restricted or "tunnel vision" Visual, auditory, or other sensory hallucinations Warping or waving of surfaces and edges Textured surfaces "Dancing" lines; "spiders", insects; form constants Lifelike objects indistinguishable from reality Phantom smoking Hallucinated presence of people not actually there
  2. Visual snow is an anticholinergic/dysautonomia syndrome. The vagus nerve is probably damaged.
  3. A patent from 2013 https://patents.google.com/patent/WO2014160423A1/en Is it really an anti-cholinergic syndrome? Is it treatable by boosting cholinergic function? Is the vagus nerve involved?
  4. It is actually quite new and exciting for me thaf something increased and lowered your photophobia. Do you have any advice for me? Should I take choline?
  5. Palinopsia Following Acute Unilateral Partial Vestibular Deafferentation: A Case Report Palinopsia is defined as the persistence or reappearance of images after cessation of the visual stimulus. One patient presented episodes of palinopsia after the functional loss of the 3 semicircular canals of the right ear while the otolithic function was preserved. None of classical causes was identified in this patient, intoxications, brain tumors, migraines, psychiatric disorders, etc. For a movement to be perceived as a single event, central processes of temporal integration are necessary to correct the shift between the rapid vestibular information, and the slow visual information. However, it has been shown on animal models that vestibular inputs are slower than normal in case of peripheral deafferentation limited to the canalar function with preservation of the otolithic function, which is the case in this patient. Therefore, we hypothesize that episodes of palinopsia he presents result from the fact that temporal integration processes do not take into account the slower than normal vestibular information due to the peripheral disorder and continue to slow it down. Thus, the patient keeps the visual image in memory until the late arrival of the vestibular information. (PDF) Palinopsia Following Acute Unilateral Partial Vestibular Deafferentation: A Case Report. Available from: https://www.researchgate.net/publication/327796848_Palinopsia_Following_Acute_Unilateral_Partial_Vestibular_Deafferentation_A_Case_Report [accessed Oct 28 2018]
  6. Common symptoms of Autonomic Dysfunction or Dysautonomia Postural hypotension: lightheadedness, dizziness, fainting, dimness of vision, unsteady gait, weakness (POTS syndrome) Paresthesias: numbness or tingling in feet, legs, hands, arms or other body parts Urinary dysfunction: excessive, incontinence, retention, hesitancy Frequent Gastrointestinal dysfunction: intermittent diarrhea, constipation, nausea, vomiting, full-ness after eating very little, loss of appetite, slowing of gastric content, bloating, heartburn excessive or decreased sweating Sexual dysfunction: erectile dysfunction, vaginal dryness, decreased libido Exercise intolerance Bradycardia (Abnormally Low Heart Rate) or Tachycardia (Abnormally High Heart Rate) Extremely Low Blood Pressure Frequent Swings in Heart Rate or Blood Pressure Frequent Bouts of Dehydration Chronic Fatigue Heart Palpitations Dizziness or Vertigo Syncope (losing conciousness) or Near Syncope Difficulty Swallowing Chest Pain Shortness of Breath Frequent Migraines or Headaches Hypersensitivity to Light, Sound, Touch, or Smell Difficulty Regulating Temperature https://mcdonaldandmcdonald.com
  7. -Pins and needles whole body -sometimes nubmness in face, toes -muscle twitching -sound sensitivity
  8. Microprism glasses seem to reduce palinopsia, photophobia and even phonophobia by having an effect on thd dopaminergic system
  9. Here is a link to the youtube channel of dr. Merill Bowan (passed away in 2017): https://www.youtube.com/user/MerrillDBowanOD
  10. Here are links to papers which suggest that microprism glasses reduce photophobia, phonophobia and palinopsia. They also mention lsd and visual snow. https://www.researchgate.net/profile/Merrill_Bowan/publication/282327409_Microprism_Application_in_Acquired_Brain_InjuryA_significant_treatment_intervention/links/560c081c08aea68653d34fa8/Microprism-Application-in-Acquired-Brain-InjuryA-significant-treatment-intervention.pdf?origin=publication_detail https://www.researchgate.net/profile/Merrill_Bowan/publication/308995989_Concept_Paper_--DRAFT_Palinopsia_an_unidentified_issue_of_Brain_Injury/links/57fd80b708ae406ad1f3d238/Concept-Paper--DRAFT-Palinopsia-an-unidentified-issue-of-Brain-Injury.pdf?origin=publication_detail
  11. I dont meditate because I am always sleepless, which causes me stress. With stress it is difficult for me to 'chill'. So, first thing I want to do is improve my sleep. How is your sleep pattern, how much do you sleep and what time?
  12. Maybe you should build it up to get used to it. I am going to try it. Another quote: Kittens placed in a dark-room for 10 or 15 days (but not 5 days) at 30 days of age exhibited significantly reduced levels of neurofilament compared with 40-day-old normally reared animals, indicating that dark exposure has returned their visual cortex into a structurally less mature state. https://www.sciencedirect.com/science/article/pii/S0960982213000699
  13. What about staying in dark for an extended time like 48 hours. Dark therapy has been shown to reduce symptoms of bipolar disorder. https://www.ncbi.nlm.nih.gov/pubmed/9611672 So it basically gives the brain rest. Would it reduce the hyperexcitability of the lingual gyrus what we need ? Maybe from evolutionary persective we should seek rest in dark to protect and heal our light sensitivity?
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