Obsessive Compulsive Disorder (OCD)
Obsessive-complusive disorder, commonly known as OCD, can present in different ways. People usually have combinations of various symptoms of OCD. In general, those who suffer from OCD have unwanted and intrusive thoughts coming to their mind and that they find it difficult to get out of their heads (Obsessions), often forcing them to perform ritualistic behaviours and routines (compulsions) to try to reduce their anxiety.
People with symptoms of OCD are aware that their obsessions and compulsions are irrational and despite of their resistance they feel helpless to stop them. Several hours of the day are spend on thinking about or trying to avoid the obsessions and performing senseless rituals. Fear of germs or the need to arrange objects in a specific manner are most common themes in OCD. Common compulsions and rituals involve hand washing, counting, or checking, doing calculations or maths in mind, etc. They lead to disruption of daily functioning and persons normal routine, one is not able to focus at job, school, or social activities. Not able to concentrate on daily activities, not able to complete the task at hand, are very common complaints.

Treatment of OCD:
Treatment involve psychotherapy such as cognitive behavioral therapy (CBT), and sometimes medication, typically selective serotonin reuptake inhibitors (SSRIs). A recent evidence is strongly in support of ERP(Exposure Response Prevention Therapy for OCD) involves increasing exposure to what causes the problems while not allowing the repetitive behavior to occur.