Each is an adverse effect of sympathetic nervous system blockers EXCEPT u2014 which is the EXCEPTION?

Blocking sympathetic allows parasympathetic ('rest and digest') to dominate: miosis, increased GI motility (GI disturbance), increased secretions (nasal congestion), vasodilation (postural hypotension). Parasympathetic activation of the bladder causes urination u2014 NOT urinary retention. Urinary retention is a sympathomimetic or anticholinergic effect.