For the last examination, let’s have a brief look at cardiovascular disease and it’s relationship to seborrheic dermatitis; a relationship not often mentioned in the medical literature, but one that may carry significant relevance to the condition.
To start our discussion, we should first define what cardiovascular disease is. Unlike Parkinson’s disease which is a very specific and well defined health condition, cardiovascular disease is a more general and overlapping term that encompasses various individual health issues that involve the heart or blood vessels. And since blood flow is under the control of autonomic nervous system, the majority of cardiovascular disease are at-least in part conditions that involve abnormal autonomic function [1, 2].
When it comes to psoriasis, the link to cardiovascular disease is commonly mentioned and the majority of the literature highlights the increased prevalence of cardiovascular disease among individuals affected by psoriasis . And often accompanying discussion of this relationship is the suggestion for individuals affected by psoriasis to improve cardiovascular health in an effort to minimize the long lasting health implications.
When it comes to seborrheic dermatitis, the majority of review papers make no mention of a any specific relationship to cardiovascular disease.
Nonetheless, a few do make mention of a case review paper from 1964 published in the British Journal of Dermatology . This paper highlighted the possibility that such a relationship exists by documenting 16 cases in which seborrheic dermatitis appeared directly following an acute cardiovascular event/disease (such as a heart attack or stroke).
The authors of this paper emphasized that further research should be aimed in this direction and speculated the following mechanisms are likely to be responsible for the skin symptoms that developed:
- Stress/emotional impact of the event could have served as the trigger due to their tendency to increase sebum production via the hormonal mechanisms
- Direct impact of the cardiovascular event on nervous system function and it’s ability to effectively regulate sebum and sweat production
And if we take into account the fact that circulating hormones are under the control of the autonomic arm of the nervous system, the two points above merge together into a single common mechanism.
These findings, taken together with data suggesting that sympathetic overdrive could itself be a leading component in the development of cardiovascular disease [5, 6] the connection becomes even more plausible.