it is important to understand the cause of anxiety
...most likely at this age the pressure gets to some students who are not focusing on their strengths and trying to achieve something by hook or crook just to be socially recognized the way they are expected to be. this might result in social phobias and anxiety disorders...and an example is urinary urgency/frequency. this in turn feeds the anxiety as you think there is some problem with the urinary system
and social phobia increases.
the psychiatrist's medicine will help reduce the anxiety but they take 3-4 weeks before showing any effect and will reduce symptoms slowly...but the urologist's one is probably not required since the disorder is probably psychosomatic. however the main problem lies elsewhere....(consult psychologist
for CBT of both patient and parents but CBT works for people with psychological mindedness and not on "know-it-all wise-guys")
this kind of problem can impair one's life very badly; hence there are some huge mistakes that must be avoided :-
1) dont let this urinary trouble affect day to day activity....focus on constructive and meaningful activity and remember there are far worse physical symptoms. people can overcome many hurdles when they are passionate about something.e.g love of music(playing music,not just listening) or some academic subject of choice will keep someone engrossed in it forgetting other woes of life.
2)dont try to hold your bladder everytime you have a urinary urge....only do it once or twice a day. and never let a phobia refrain u from leaving home or go for a long journey...because facing the problem leads to cure instead of feeding it with fear.
3) exercising is important....strength training for external + yoga/pranayam for internal benefit
4) ease up the mind with logic and wisdom...(e.g. you cant consider a career in pure physics if you cant deal with school-level maths OR you cant jeopardize your future by getting enrolled to a physics-honours course just beause you scored some good marks by fluke at the +2 level without really understanding the subject matter)
hence, if there is some problem with your career and relationships with people be honest about them and do what "should be done" and have "faith in goodwill/god" and not in "hype".
the psychologist will help with these issues in detail depending on the particular case. i'm not a doctor...a private-teacher who has seen these sort of problems and have been able to help in certain cases.