<s>[INST] hi , my dad is having belching problem , he couldnt swallow things , he is a chain smoker , few days back while he was eating he went unconcious for a moment and became normal , when i took him to doc he is diagonised to have kidney stones of 8mm . i would like to get some suggestions [/INST] Hi, welcome to Chat Doctor. Looking to your fathers' history, kidney stone was accidentally detected on evaluation for transient unconsciousness and swallowing problem.8 mm stone in kidney usually does not pass spontaneously. If it is not obstructing the urine passage, you can follow it up with repeat sonography or CT scan after 3 months. But your father needs evaluation for unconsciousness with neurologist. Best wishes. Tc. </s>