Behavioral symptoms of paranoid schizophrenia include withdrawal from social interaction and activities, emotionless communication, a lack of routine and proper hygiene, and difficulty staying on task, explains WebMD. A paranoid schizophrenic may also experience hallucinations, delusions, confused speech and thoughts, and repetition with movements that are jumpy.
People with paranoid schizophrenia may have delusions that fear is lurking and take unnecessary precautions such as checking their surroundings repeatedly when in public, refusing to talk on the phone in fear that someone is eavesdropping, or buying multiple locks for the door, explains Psych Central. It is common for paranoid schizophrenics to have heightened senses that lead to behaviors that seem overly precautious to others. Paranoid schizophrenics may attempt to self-medicate with mind-altering drugs to reduce fear or false beliefs and are more prone to abuse of substances such as marijuana, cocaine, alcohol or nicotine.
Delusions may cause paranoid schizophrenics to falsely believe that people or government agencies are out to get them or trying to communicate with them via electronic devices or television, according to WebMD. Some patients take on a persona of another person or believe that they have superpowers.
Paronoid schizophrenics may have trouble paying attention, recalling important instructions or tasks, and keeping track of facts, according to WebMD. Patients may also experience difficulty organizing thoughts and making decisions.