This may be driven by increased sympathetic autonomic activity.
These states are observed when there is hypervolemia and/or increased sympathetic tone.
Additionally, increased sympathetic tone and use of vasopressors during septic shock could theoretically enhance melatonin excretion.
Pregnancy is associated with an increased sympathetic state, which can be exacerbated by gestational conditions.
Increased sympathetic innervations trigger the initiation of atrial ectopic activity, which can further progress into A-fib.
They concluded that these results suggest increased sympathetic and/or decreased parasympathetic nervous system activity in headache.
HLA-B27-related uveitis is notorious to form posterior synechiae rapidly, and we know increased sympathetic discharge dilates the pupil.
Hypoxia-induced increased sympathetic activity, blood viscosity, or inflammation, among other factors, may mediate the underlying pathogenesis.
Aging is associated with increased sympathetic outflow [10] and decreased endothelial function [11].
The increased sympathetic nerve activity was shown to be due to the excessive testosterone levels distinguishing the condition [17].
This was interpreted by the results from Carmignani et al. [27] as a consequence of the increased sympathetic tone.
