There are over 2,900 species of snakes ranging as far northward as the Arctic Circle in Scandinavia and southward through Australia. Snakes can be found on every continent except Antarctica, in the sea, and as high as 16,000 feet (4,900 m) in the Himalayan Mountains of Asia.
The negative symptoms of schizophrenia are passive in nature. They affect the personâs thinking, emotion and behavior and can be the most devastating of all the symptoms. Three of the most common are flat affect, alogia, and avolition.
Schizoaffective disorder is characterized by persistent symptoms of psychosis resembling schizophrenia with additional periodic symptoms of mood (or affective) disorders. Symptoms of Schizoaffective Disorder The following are symtpoms that a person with Schizoaffective Disorder can experience. Symptoms of depression: 1  Feel constantly sad and fatigued. 2  Have lost interest in everyday activities. 3  Are indecisive and unable to concentrate. 4  Sleep and eat too little or too much. 5  Complain of various physical symptoms. 6  May have recurrent thoughts of death and suicide.