Interestingly the author states his symptoms started through a combination of lack of sleep and dating a disturbed individual [1].<p>Such a diagnosis is possibly offensive, ableist and unscientific, however there are many such anecdotal reports of people with (developing or fully developed) mental illness pairing up.<p>While there is little evidence of such pairing up being a <i>cause</i> (i.e. some sort of &quot;contagiousness&quot;, as explored in [2]), there <i>is</i> some evidence that people suffering from mental illness (including personality disorders) can be attracted to one another [3].<p>[1] <a href="http:&#x2F;&#x2F;www.kennethreitz.org&#x2F;essays&#x2F;purging-the-unexpected-negative-a-narcissistic-partner" rel="nofollow">http:&#x2F;&#x2F;www.kennethreitz.org&#x2F;essays&#x2F;purging-the-unexpected-ne...</a><p>[2] <a href="http:&#x2F;&#x2F;www.rawstory.com&#x2F;2015&#x2F;12&#x2F;is-mental-illness-contagious&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.rawstory.com&#x2F;2015&#x2F;12&#x2F;is-mental-illness-contagious...</a><p>[3] <a href="http:&#x2F;&#x2F;www.medicaldaily.com&#x2F;law-attraction-mental-illness-marriage-375268" rel="nofollow">http:&#x2F;&#x2F;www.medicaldaily.com&#x2F;law-attraction-mental-illness-ma...</a>