Details of delusional parasitosis vary among sufferers, but it is most commonly described as involving perceived parasites crawling upon or burrowing into the skin, sometimes accompanied by an actual physical sensation (known as formication). Sufferers may injure themselves in attempts to be rid of the parasites.
Perhaps one of the earliest trials in 1982, gave participants a dose of THC (1 mg/kg), followed by either a dose of valium or of CBD (0.5 mg/kg). The results suggested that CBD had a counteractive effect on THC stimulated anxiety.
(If youâre wondering why G.W. Pharmaceuticalsâ Sativex, a 1:1 CBD-to-THC plant extract, is rarely perceived by patients as psychoactive, bear in mind that Sativex users, on average, ingest 41.6 milligrams per day of plant cannabinoids â21.6 mg of THC, 20mg of CBD.