G.M. is a 17 years old female who lives with her family

G.M. is a 17 years old female who lives with her family. She is pleasant to talk to and came to the clinic for mental health evaluation after she discloses that she has been having intrusive and unwanted thoughts and often engaged in repetitive behavior to get rid of the anxiety that always accompanies these thoughts. She think every room in Schoo and her house have a harmful germs . Her symptoms started manifesting one year ago out of no where. ( she doesn’t know the reason )and have since worsened to the point of interfering with her school work, relationships, and social activities. GM also reported that she spends a considerable amount of time each day trying to prevent self-harm by seeking assurances from friends and family. She denies any previous mental health issue. Never been treated for any medical issues as well. She denies killing herself and others. She never took any medication before except supplement such as Vitamins ( C &D) I need clinical impressions/ case formulation for this means health issue.