The answer is ST 25 (Tianshu), ST 36 (ZSL), ST 21 (Lianmen), SP 4 (Gongsun) + moxa
The patient needs to have the diarrhea stopped first and foremost, and SP4 is an empirical point for this. ST21 is often used with cases of Deficiency and it helps to stop diarrhea. ST25 is the Front-Mu of LI and used for both Excess or Deficiency bowel concerns.