The types of cognitive disorders that affect a person's thinking ability are described. These disorders can include schizophrenia, obsessive-compulsive disorder, bipolar disorder, and depression-related thinking disorders. Cognitive disorders can manifest in over 500 different clinical variations. According to the World Health Organization, between 100,000 and 700,000 people out of every 100,000 have cognitive disorders. These conditions can significantly affect a person's daily life and work activity, with symptoms often including difficulties in self-awareness, hallucinations, and delusions