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.
Symptoms. Schizoaffective disorder symptoms vary from person to person. People who have the condition experience psychotic symptoms â such as hallucinations or delusions â as well as a mood disorder.he course of schizoaffective disorder usually features cycles of severe symptoms followed by a period of improvement, with less severe symptoms. Signs and symptoms of schizoaffective disorder may include, among others: 1  Delusions â having false, fixed beliefs. 2  Hallucinations, such as hearing voices.