Testosterone not associated with violent dreams or REM sleep behavior disorder in men with Parkinson's

We examined the relationship between testosterone levels, violent dreams, and REM steep behavior disorder (RBD) in 31 men with Parkinson's disease (PD): 12 with clinical RBD and 19 without. All PD patients with clinical RBD experienced violent dreams, but none of the 19 non-RBD patients reported violent dreams. While dream content appears to be more aggressive in PD patients with clinical RBD, the presence of violent dreams or clinical RBD is not associated with testosterone levels in men with PD. (C) 2007 Movement Disorder Society.