Children who do not get along with their parents:

A. Narcissistic parents-May one distance himself from his parents if they have bad character traits and cause him much pain?[1]

Yes. It is permitted for a son or daughter to distance themselves from their parent if the parent is of bad temperament and causes tremendous pain to the child. [It is permitted to do so in order so the child does not come to be put in a situation where he will belittle their honor. However, he may not do so in order to purposely cause them pain, and hence it is self-understood that he may not necessarily sever ties with them and is only to distance himself to a point where a healthy relationship can be maintained. In all cases one should consult with a Rav for advice prior to making any decision of distance and estrangement.]

B. May one distance himself from a parent who is an alcoholic or addicted to drugs?[2]

Yes, as stated above.

C. May one distance himself from his parents if they simply have bad chemistry and don’t get along?[3]

Yes, as stated above.

D. May one distance himself from his parents if they request from him things that are not befitting for them?[4]

Yes.

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[1] Piskeiy Riaz Kiddushin 1:8-12, brought in Shiltei Hagiborim; Aruch Hashulchan 240:33; Pesakim Uteshuvos 240:36; Encyclopedia Talmudit Erech Kibud Av Vaeim Vol. 26 p. 416-417

[2] Aruch Hashulchan 240:33; Pesakim Uteshuvos 240:36

[3] Sefer Chassidim 343; Chacham Tzevi 20; Pesakim Uteshuvos 240:36

[4] Rameh Kiddushin 31b; Yam Shel Shlomo Kiddushin ibid; Chacham Tzevi Tosafus Chadashim 20