There has been some discussions as in how different mbti types are prone (meaning prone, not doomed to or totally affected by) to different mental conditions. For the sake of fun, I'll bring it up again. No offence intended to everyone (find comfort that when I offend every type, it's like I offend no type at all :tongue
ESTJ
Most prone to paranoias, most of which the fear that when they are incompetent, ESTJ will disappoint some authority, or they become shunned from some community or a circle of people.
Example would be ESTJ being extremely bossy in the school's project team to other teammates, because of the fear that failing the project will lower their academical performance, which will lead to decreased academical prospects etc.
ESTP
Most prone to impulsive behaviour, like issues with containing anger or "thinking on their feet", which means doing something instinctively and paying absolutely no regard to the consequences (Ni as being the most inferior conscious function).
Example would be an ESTP man hooking up with a girl and ignoring the girl's warning that her ex-boyfriend is a battle-hardened navy seal.
ESFJ
Can't think of anything more specific, but as far as I have known this type, there's a big inclination towards being dishonest and not on touch with himself/herself. This manifests in taking so much responsibilities that they live under a constant stress of not being physically able to attend to them, and when they crack under that stress, people regard that ESFJ as being the spawn of devil or overly dramatic.
ESFP
Most prone to histronicism and exhibitionism, in a sense that they indulge in superficial pleasures and hedonism so much that they forget anything else.
Example would be an ESFP who spends a lot of money buying expensive chocolate and wine, or an ESFP girl who gets offended and frustrated, thinking that people hate her personally and for no good reason, when she is being told to not come to the class anymore with a mini skirt that looks like underpants, and a tank top that reveals from a mile away if she's wearing a bra or not.
ENTJ
Most prone to paranoias, in a sense that they are not up for the task, which causes them to become a workaholic, or to study and research themselves to death.
An example would be an ENTJ who has a personal goal to complete with high honours from a school, and for that, they keep studying and studying and studying, driving themselves nuts until they achieve the goal.
ENTP
Most prone to ADHD , in a sense that they have so much ideas and things to do in their mind that they can't pick and stick with one.
Example would be an ENTP who starts to look for a job and suddenly finds itself building kennels with attachable birdhouses, because it seems like a 18-carat business opportunity, forgetting that establishing a business depends on many factors that might overwhelm the enthusiasm of an ENTP once the reality steps into the game, like the fact that establishing a business in some places is all about the connections.
ENFJ
Most prone to magical thinking or delusion of grandeur, where ENFJ sees the infinite amount of potential in a group of people and convinces them to do the impossible, by taking only the ENFJ's word for it.
An example would be an ENFJ who starts a political resistance movement in a state under the control of a tyrannically opressive totalitarian regime, and failing to properly estimate the odds of the success of the movement, which might lead to imprisonment, whereas keeping the head a little bit lower would have allowed the movement to flourish few months later in a different political climate.
ENFP
Most prone to ADHD and anxieties, overanalysing the emotions of others and coming to false conclusion that an ENFP is constantly under the watch and in the thoughts of people, or being afraid that the whole world falls apart once ENFP is gone, because ENFP is the only one who wants to get things done and others are too schizoid to ever move a muscle for keeping the community together.
An example would be an ENFP schoolgirl who goes from classmate to classmate, talking about an idea to organize a classtrip for the sake of keeping the class spirit high, and when the classmates refuse it, the ENFP gets into a spin how all the class conspires against her and wants her to be gone, while they only refused because the location for that suggested classtrip is unreachable by cheap means of transport.
ISTJ
Most prone to conservatism and substance abuse, out of fear against a constantly progressing world that always seems to compete and take away everything that ISTJ truly admires and appreciates.
An example would be an old ISTJ man who turns into alchoholism, because he can't stand the prospect of selling his childhood home where he's been living all his life, with all the memories it contains and places he used to be at.
ISTP
Most prone to sadistic behaviour, deriving pleasure from causing suffering to everyone who does not appreciate what he's/she's got, or wanting to see people reacting to pain, because it's funny or stimulating.
An example would be an ISTP classmate who steals your pencil and when you turn to ask it back, the ISTP acts extremely offended and angry, but bursts into laughter when you return into your place and throws the pencil back at you.
ISFJ
Most prone to compulsive behaviour, where anything that's not as it supposed to be starts to grind ISFJ's gears and causes ISFJ to feel physically ill.
An example would be an ISFJ mother who re-assembles your furniture weekly and cleans your room throughoutly more than once a week.
ISFP
Most prone to "stereotypical emo behaviour" (I don't know the correct term for this, sorry), making a tragedy out of everything, seeing the world in black and white, predicting and assuming disaster in everything.
An example would be an ISFP boy who sees his parents fighting, and as a result, he feels guilty all day, feeling that his presence makes his parents to fight more with each other, and the boy proceeds this by taking a hike and running away from home, believing that he is a burden to them.
INTJ
Most prone to aspbergers, meaning that INTJ begins to glorify the sanctity of competence, knowledge and intelligence, while considering any calls for help, display of feelings or counting on others as a sign of weakness.
An example would be an INTJ man who faces a couple of rejections after a long time of being single and as a result becoming openly misogynistic, because it's too selfish to think that these rejections have anything to do with an INTJ, meanwhile crying on the internet forums about not having a girlfriend, not realising that he's participating in a self-fulfilling prophecy.
INTP
Most prone to outward schizoidness, which leads to having second thoughts about matters that are pretty straightforward, and being able to rationalize almost everything in their head in very complicated manner leads them to become enigmatic for others.
An example would be a white male INTP who refuses to get a job, because the shop accross the street is run by an indian who "only hire their own kind", the car wash in the end of the street is "employing only the lowlives", and all the other places are owned by corporate institutions who are seeking to train mindless drones for an incoming future of capitalist hell, meanwhile his friend in the exact same position and right next door already got a job months ago.
INFJ
Most prone to narcissism, and "hipster douchebag" kind of behaviour, where the INFJ starts to passionately hate broad communities of people for no reason, other than "they listen to shitty music" or "they go to this shitty school that accepts all kinds of lowlives from four corners of our county"
An example would be an INFJ girl who works as a barista in starbucks and constantly conveys social experiments, like putting wrong amount of sugar in the drink of everyone who order the usual black coffee, because the usual black coffee is a sure sign that the person is nothing but a stupid sheep, too bland and boring to try out the coffees in the menu that INFJ personally enjoys.
INFP
Most prone to avoidant behaviour, shunning everyone that does not respond to a whole criteria that INFP expects from a friend or a lover. Having too idealistic and unrealistically high expectations for everyone and becoming frustrated and judgemental when people break this INFP's illusion by "being themselves".
An example would be an INFP girl who lives with her 40 cats all day long, while automatically rejecting every man who wants to date her for being a heartless Adolf Hitler, while the future husbands just can't stand the prospect of 40 cats contained in one apartment suite.