Romanian Journal of Psychiatry & Psychotherapy
June 30, 2020
Cristiana Ţăpoi
1 citation
Approximately one-third of patients presenting with a first episode of psychosis have a history of cannabis use. Some of these patients meet the criteria for cannabis-induced psychotic disorder (CIPD), which is regarded as a disorder with better outcomes compared to other psychotic disorders. The aim of this paper was to determine whether there are differences in clinical and demographic...
Journal of Clinical Investigation
June 22, 2020
Y. Hurd
The past decade has seen a reduction in society’s perception of cannabis being of any risk or harm. However, we are in a transformational time in which cannabis’ health implications related to neurodevelopment, particularly for vulnerable populations, must challenge such perceptions of harmlessness. The combination of multiple interrelated factors — societal, political, and business — have...
Paediatrics & Child Health
June 1, 2020
Clairélaine Ouellet-Plamondon, Simon Dubreucq, Didier Jutras-Aswad
2 citations
A 17-year-old male is brought to the emergency room by a friend who finds him strange lately. The patient is very anxious and seems to be scared. He reports having recently discovered that government was spying on him, using a complex network of cameras and satellites. He has unplugged all of his house hold electronic devices and refuses to talk to his friend on the phone. During the interview,...
Revue des maladies respiratoires
June 1, 2020
P Mura, M Underner, B Brunet
Nicotine is the specific psychoactive substance of tobacco while tetrahydrocannabinol (THC) is the specific component of cannabis. The inhalation technique of cannabis is different from that of tobacco smoking: the volume of puffs is larger, inhalation is deeper, and pulmonary retention time is longer. Cannabis addiction is difficult to evaluate, both products often being smoked concomitantly....
May 27, 2020
Christopher Missak, Jenie George, I. Gurubhagavatula
Marijuana use is increasing the United States and has been associated with increased sensory perception, euphoria, and altered cognition. Exploding head syndrome is a parasomnia characterized by loud explosion-like noises occurring prior to or during sleep. This the first report to link marijuana use with the occurrence of EHS. A 45-year-old man with depression, anxiety and multisubstance abuse...
Schizophrenia Bulletin
May 18, 2020
Teemu Peltonen, Antti Mustonen, Jari Koskela et al.
Abstract Background Recent studies indicate that adolescent cannabis use (1) and cigarette smoking (2) increase the risk for psychosis. However, less is known about symptom profile associated with cannabis use and cigarette smoking prior to the psychotic episodes. Our aim was to study the associations between daily smoking, life-time cannabis use, and psychotic experiences in adolescence, and...
Schizophrenia Bulletin
May 18, 2020
Gabrielle Pochiet, Katie Lavigne, Ashok Malla et al.
Abstract Background Although growing research has observed a positive association between cannabis consumption and cognition in patients with first-episode psychosis (FEP), such better performance has not always been found across all cognitive domains. Furthermore, it remains unclear whether frequency of use is related to cognitive functioning in a dose-dependent manner. Understanding these...
Frontiers in Psychology
May 14, 2020
Marco Colizzi, Mirella Ruggeri, Sagnik Bhattacharyya
50 citations
Research evidence suggests a dose-response relationship for the association between cannabis use and risk of psychosis. Such relationship seems to reflect not only an increased risk of psychosis as a function of frequent cannabis use, but also of high-potency cannabis use in terms of concentration of delta-9-tetrahydrocannabinol (∆9-THC), its main psychoactive component. This finding would be...
Psychosis
May 13, 2020
Katherine Newman‐Taylor, Thomas Richardson, Monica Sood et al.
18 citations
Cannabis use can increase severity of symptoms and risk of relapse for people with psychosis. Childhood sexual abuse and high schizotypy increase the risk further. The mechanisms involved remain unclear, and this limits psychological therapies. In three linked studies, we examined the role of two candidate mechanisms – external attribution and cognitive fusion. Study 1 examined these processes...
Translational Psychiatry
May 12, 2020
Chandni Hindocha, Diego Quattrone, Tom P. Freeman et al.
Epidemiological and biological evidence support the association between heavy cannabis use and psychosis. However, it is unclear which cannabis users are susceptible to its psychotogenic effect. Therefore, understanding genetic factors contributing to this relationship might prove an important strategy to identify the mechanisms underlying cannabis-associated psychotic experiences. We aimed to...