“…Motor symptoms may include weakness, balance disturbances, and difficulty performing fine motor skills and a diminished or absent deep tendon reflex. Motor symptoms are less frequent due to the neurotoxic agent's inability to cross the blood-brain barrier in concentrations significant to cause harm (Bakitas, 2007;Murillo, Cox, & Oholendt, 2008;Park et al, 2013;Visovsky, Collins, Abbott, Aschenbrenner, & Hart, 2007;Wilkes, 2007). The autonomic system may also be affected, resulting in constipation, urinary retention, sexual dysfunction, and altered blood pressure (Bakitas, 2007;Visovsky et al, 2007;Wilkes, 2007).…”