Road Rage? Blame your cat.
Road Rage Infection: Intermittent Explosive Disorder May Be Caused By Toxoplasmosis Gondii Parasite In The Human Brain
http://www.medicaldaily.com/toxoplasma-gondii-intermittent-explosive-disorder-road-rage-human-brain-379303
Millions of people suffer from rage disorder, a psychiatric condition marked by explosive episodes of unwarranted anger. But a team of researchers from the University of Chicago have discovered it really might not be their fault; there’s a good chance a parasite living in their brains is causing their abnormal bouts of rage.
Roughly 30 percent of the human population is walking around with one of these parasites in their brains, and many don't know. According to the new study, published in the Journal of Clinical Psychiatry, people suffering from intermittent explosive disorder (IED) are twice as likely to be infected carriers. The single-celled parasite Toxoplasma gondii spends most of its life cycle inside a cat, but can infect people when they touch their mouths after changing their cat’s litter. The parasites are also transmitted through undercooked meat or contaminated water and usually reside as a harmless, latent infection.
For the study, researchers recruited 358 participants who were then evaluated for IED, personality disorder, depression, and other psychiatric disorders. Each participant was measured for characteristic traits, including anger, aggression, and impulsivity and then later tested for a latent toxoplasmosis infection. One third of the subjects were diagnosed with IED while another third were diagnosed with a psychiatric disorder other than IED. The last third had no adverse behaviors or notable diagnoses and served as a control.
It turns out, the group diagnosed with IED was twice as likely to test positive for a toxoplasmosis infection compared to only nine percent of the participants in the healthy control group. Twenty-two percent of those who had the characteristic anger disorder were infected by the parasite, while 16 percent of those with another psychiatric disorder were infected. But across the board, all of the participants whose blood tested positive for a toxoplasmosis infection scored significantly higher on scores of anger and aggression, whether or not they were healthy, diagnosed with IED, or another psychiatric disorder. Researchers aren’t sure if the parasite is directly causing aggression or IED, or if the two are simply correlated.
= new reply since forum marked as read
Just wondering. 
saying it manifests as passive aggression. 
I'm owned by a cat and am not a tRump supporter.
This one?
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after changing the litter box 
So no litter box required.
But yes, I do wash my hands a lot!