Hi, Thanks for using healthcare magic. It seems that you daughter is suffering from exam phobia with or without social anxiety. But other diagnosis like depression, conduct disorder or personality disorder should be ruled out. Pur blocka contains propranol which is used to control performance anxiety. But you should consult your psychiatrist . You should take her to psychiatrist for detailed evaluation. Doctor after confirming the diagnosis, may advise you to take anti depressant drugs like peroxetine or sertraline or anti anxiety agents like clonazepam to control her anxiety. Doctor may advise counselling and psychotherapy as a part of treatment. Meanwhile she can do stress management and relaxation therapy like breathing exercise, yoga, meditation etc for better control over stress. I hope It will help. Thanks.