Welcome to HCM!
I have read your question carefully and from my clinical experince I can say that you have unconsciously attached the bowel movement with playing computer game. Now, only when you play computer game, you feel a surge of excietment, this increases the bowel movement and you poo..but it has got so much associated that you cannot pass with out playing game.
Tea, coffee have stimulants in them which again hasten bowel movements, and it is commonly found that many people can pass poo only after a cup of tea/ coffee!
Now, if you want to get rid of it, you have to go slow and have patience. it will be advisable to meet a
psychologist and follow the advice/ undergo Therapy sessions.
Also, you can start dis- associating them by playing computer game for lesser duration than usual ( may be by few minutes initially) and poo ---> and slowly reducing the time of playing game and go to toilet ---> lately when you are able to do so, just open the game and donot play --> and then just hold the device once and not play any game----> and then just imagine that you have the computer/ game in your hand and go for toilet----> and lately, stop thinking about the game altogether.
There is nothing organic about toilet and the video game, the association is just in mind, but has become quite strong now, so you wil have to work on it.
I can guarantee you that this association can be broken completely with above steps, you may go very slow, moving each step after you are comfortably passing stool in last step, OR can move fast if you are able to do so.
I have seen such cases respond fast with realxation session and under
hypnosis.
So, it is completely treatable , no worries, just try!!
Hope the reply helps you
feel free to ask more questions.
Dr. Manisha Gopal