Does heaven exist? With well over 100,000 plus recorded and described spiritual experiences collected over 15 years, to base the answer on, science can now categorically say yes. Furthermore, you can see the evidence for free on the website allaboutheaven.org.

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This book, which covers Visions and hallucinations, explains what causes them and summarises how many hallucinations have been caused by each event or activity. It also provides specific help with questions people have asked us, such as ‘Is my medication giving me hallucinations?’.

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Observations placeholder

Migraine, headache and pain killers



Type of Spiritual Experience


Number of hallucinations: 1


The key finding is not that hallucinations could result but that the pain killers were the cause


A description of the experience

[Chronic analgesic-induced headache]. - [Article in German] Dichgans J  Diener HC  Gerber WD, Verspohl EJ, Kukiolka H, Kluck M.
Fifty-two patients, most of whom had had daily headaches for years, were examined and treated.
Among them there were 40 who originally had migraine, the others had vasomotor or post-contusional headaches. Average duration of the migraine was 21 years, of chronic headache 7.6 years.
All patients had been taking analgesics of a mixed type regularly and for a long time, on average 35.6 tablets or suppositories weekly. All patients had taken more than three different drugs.
After an observation period of 3-6 months for grading the headaches and registering the amount of drug intake, all patients were admitted to hospital when all analgesics were at once discontinued.
Changing degrees of withdrawal symptoms were the rule: increased headaches, nausea, vomiting, tachycardia, sweating, sleep disorders, and in some also hallucinations and cerebral episodes.
At the end of the hospital stay chronic headache had completely disappeared or markedly improved in 77% of patients.
Even after an average of 16 months of subsequent observation, chronic headache continued to be significantly improved in 70% of patients.
There was a significant reduction in frequency and intensity of attacks in the patients with originally typical migraine.
Regular intake of analgesics of the mixed type induces chronic headaches. These are most commonly caused by ergotamine tartrate and aminophenol derivatives, while psychological and physical dependence on anti-migraine drugs is initiated and maintained by additional barbiturates, caffeine and codeine

The source of the experience


Concepts, symbols and science items



Science Items

Activities and commonsteps