Obsessive-compulsive disorder.

Obsessive Compulsive Disorder or OCD is a chronic disorder that waxes and wanes over time. Symptoms may intensify spontaneously without any reason and at times it can become a very disabling illness. Onset is usually in childhood, as early as ten years of age. However it often does not come to diagnosis because people with OCD hide their symptoms from their families due to shame or guilt. This disorder occurs equally in males and females.