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.
Schizophrenia symptomsâ¶ are typically separated into 2 categories: Positive symptoms: Feelings or behaviors that are usually not present, such as: 1  Believing that what other people are saying is not true (delusions)  Hearing, seeing, tasting, feeling, or smelling things that others do not experience (hallucinations)
To be diagnosed with schizophrenia, a patient must have psychotic, loss-of-reality symptoms for at least six months and show increasing difficulty in functioning normally. Before the six-month period is reached, the person is diagnosed as having a schizophreniform disorder.onversely, the inability of patients with schizophrenia to sort and interpret stimuli and select appropriate responses is one of the hallmarks of the disease. The symptoms of schizophrenia are generally divided into three categories, including positive, disorganized, and negative symptoms.