http://the16types.info/types-INFJ.php states:
"Disorder Perspective The personality disorder which is a pathological representation of the Sensitive personality type is the Avoidant Personality Disorder.

Basic belief: I may get hurt. Thinking strategy Avoidance"

In order to have a "valid" reason to stay away from other people at least subjectively, one way is to focus at what they lack and/or to focus at the the self, whether it is "better" or not..

I know a 26 yo INFJ woman who is very much into talking about ideals and is almost self accusing like if she knows she has bought a t-shirt that may have been made by a low paid worker in a far away country. (So she buys second hand clothes as well). I understood eventually that some negative traits that she "accused" me (=told me, in a more upset mood) to have actually were her own whether I had them too or not.
However, she has had a little of duality in her, being with other types of people than her own type more than close to her own type. Which she didn´t really realize until knowing her for more than a year. It took so long for me to break through the manipulative verbal impact she had made onto me, as the rhetorical person she was.

And because she did not want to show other people too much of her real inner side of feelings, deep thoughts and ideals she had another profile outwards, maybe a bit of an ESTP-shadow being pressed out as she compressed the INFJ-side inwards. She has been quite manipulative earlier and mood changing, almost like adapting her mood to different age-types and attitudes depending on the situation. She may avoid listening to her telephone messages, not reading her emails for a long time and not paying bills on time although she has a job. Part of this may be after being an incest victim as she have told about. Most of the time been very clever, showing logic wisdom without first analysing, therefore some spots have occured in her reasoning which I, as an INTJ have tracked sooner than her. But also she has behaved in different ways. Sometimes, depending on the situation and the time of the day, her mood has shifted into younger type of high-intellect or bad-mood, as of a teenager. Also when her mood has changes, her voice have changed more than what is usual within a somewhat normal and homogeneous personality.

It has been scary sometimes because when she have felt hurt or vulnerable more than she should, she´s been even threatening (let me tell you, then have looked almost "demon obsessed".. not funny..)
or begging like a little child a few times. She is the most complicated INFJ I have known, with these large shifts seen. She will soon have therapy.