Progression of cannabis withdrawal symptoms in people using medical cannabis for chronic pain

Abstract

Background and aims Research from cohorts of individuals with recreational cannabis use indicates that cannabis withdrawal symptoms are reported by more than 40% of those using regularly. Withdrawal symptoms are not well understood in those who use cannabis for medical purposes. Therefore, we prospectively examined the stability of withdrawal symptoms in individuals using cannabis to manage chronic pain. Design, Setting, Participants Using latent class analysis (LCA) we examined baseline cannabis withdrawal to derive symptom profiles. Then, using latent transition analysis (LTA) we examined the longitudinal course of withdrawal symptoms across the time points. Exploratory analyses examined demographic and clinical characteristics predictive of withdrawal class and transitioning to more or fewer withdrawal symptoms over time. A cohort of 527 adults with chronic pain seeking medical cannabis certification or re‐certification was recruited between February 2014 and June 2015. Participants were recruited from medical cannabis clinic waiting rooms in Michigan, USA. Participants were predominantly white (82%) and 49% identified as male, with an average age of 45.6 years (standard deviation = 12.8). Measurements Baseline, 12‐month and 24‐month assessments of withdrawal symptoms using the Marijuana Withdrawal Checklist–revised. Findings A three‐class LCA model including a mild (41%), moderate (34%) and severe (25%) symptom class parsimoniously represented withdrawal symptoms experienced by people using medical cannabis. Stability of withdrawal symptoms using a three‐class LTA at 12 and 24 months ranged from 0.58 to 0.87, with the most stability in the mild withdrawal class. Younger age predicted greater severity and worsening of withdrawal over time. Conclusions Adults with chronic pain seeking medical cannabis certification or re‐certification appear to experience mild to severe withdrawal symptoms. Withdrawal symptoms tend to be stable over a 2‐year period, but younger age is predictive of worse symptoms and of an escalating withdrawal trajectory.

Perceived Efficacy, Reduced Prescription Drug Use, and Minimal Side Effects of Cannabis in Patients with Chronic Orthopedic Pain

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Changes in striatal dopamine release, sleep, and behavior during spontaneous Δ-9-tetrahydrocannabinol abstinence in male and female mice

“…Increased irritability is prevalent during cannabis abstinence in humans [ 24 , 96 ]. We were surprised to find that relatively few irritability-like behaviors were altered in our bottle brush test assay.…”

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