May 3, 2016

Paranoia

MedicineNet - Paranoia

Paranoia Symptoms & Signs

Medical Author:

Related
Symptoms & Signs

Paranoia refers to the perception or suspicion that others have hostile or aggressive motives in interacting with them (for example, "they are out to get me"), when in fact there is no reason for these suspicions. People experiencing paranoia believe that others are persecuting them and have delusional ideas about themselves as central figures in scenarios that in reality have little relevance to them. They may mistrust others and remain often in a state of suspicion. Minor feelings of paranoia are common, but severe paranoia can cause significant fear and anxiety and can have a pronounced effect on social functioning. Feelings of paranoia can be observed with many psychological disorders, including schizophrenia, as well as with a number of medical diseases that can affect brain function, ranging from Alzheimer's disease to multiple sclerosis.

Medically Reviewed by a Doctor on 12/7/2015

Health concern on your mind? Visit the Symptom Checker.

REFERENCE:

Longo, D.L., et al. Harrison's Principles of Internal Medicine, 18th Ed. United States: McGraw-Hill Professional, 2011.

Causes of Paranoia
    • Alcoholism Alcoholism is a disease that includes alcohol craving and continued drinking despite repeated alcohol-related problems, such as...learn more »
      In This Article
      Alcoholism Article
      • Alcohol use disorder facts
      • What is alcohol abuse?
      • What is alcoholism?
      • What differentiates alcohol abuse from alcoholism?
      • What are risk factors for alcoholism?
      • What causes alcoholism? Is alcoholism hereditary?
      • What are alcohol use disorder symptoms and signs in teenagers, women, men, and the elderly?
      • How do physicians diagnose alcohol use disorder?
      • What are the stages of alcohol use disorder?
      • What is the treatment for alcohol use disorder?
      • What medications treat alcohol use disorder?
      • How can you tell if someone has a drinking problem?
      • Can an alcoholic just cut back or stop drinking?
      • Is there a safe level of drinking?
      • Is it safe to drink alcohol while pregnant?
      • How can someone find more information or get help or support to treat alcohol use disorder?
      • What are the long-term physical and psychological effects of alcohol use disorder?
      • What is codependency, and what is the treatment for codependency?
      • Is it possible to prevent alcohol use disorder?
      • What is the prognosis of alcohol use disorder?
    • Anxiety Anxiety is a feeling of apprehension and fear characterized by symptoms such as trouble concentrating, headaches, sleep problems,...learn more »
      In This Article
      Anxiety Article
      • Generalized anxiety disorder facts
      • What is anxiety?
      • What are the types of anxiety disorders?
      • What are anxiety symptoms and signs?
      • What is generalized anxiety disorder (GAD)?
      • How common is generalized anxiety disorder?
      • Are other mental health diagnoses associated with generalized anxiety disorder?
      • What are causes and risk factors for generalized anxiety disorder?
      • How do health-care professionals diagnose generalized anxiety disorder (GAD)?
      • What types of specialists treat generalized anxiety disorder?
      • What is the treatment for anxiety?
      • What are the side effects of anxiety medications?
      • What are complications of generalized anxiety disorder?
      • Is it possible to prevent anxiety?
      • What is the prognosis of generalized anxiety disorder?
      • Are there support groups for those with generalized anxiety disorder?
      • Where can people find additional information on generalized anxiety disorder?
    • Bath Salts Ingredients of the drug bath salts include mephedrone, methylone, MDPV, or MDPK. Feeling high and sexually stimulated are...learn more »
      In This Article
      Bath Salts Article
      • Bath salts facts
      • What are bath salts, and how do people abuse bath salts?
      • What is the history of bath salts?
      • Are bath salts addictive?
      • Are bath salts legal?
      • What are risk and protective (prevention) factors for bath salts use disorder?
      • What are the symptoms and signs of bath salts intoxication?
      • What are the side effects, complications, and prognosis of abusing bath salts?
      • How do health-care professionals diagnose bath salts use disorder?
      • What is the treatment for bath salts use disorder?
      • Where can people find more information about bath salts abuse and addiction?
    • Bipolar Disorder Bipolar disorder (or manic depression) is a mental illness characterized by depression, mania, and severe mood swings. Treatment...learn more »
      In This Article
      Bipolar Disorder Article
      • Bipolar disorder facts
      • What is bipolar disorder?
      • What is the history of bipolar disorder?
      • What are the types of bipolar disorder?
      • What are bipolar disorder causes and risk factors?
      • What are bipolar disorder symptoms and signs in adults, teenagers, and children?
      • What tests do health-care professionals use to diagnose bipolar disorder?
      • What illnesses coexist with bipolar disorder?
      • What are bipolar disorder medications and other treatments? Are there any home remedies or alternative treatments for bipolar disorder?
      • How is bipolar disorder treated during pregnancy and the postpartum period?
      • What are complications and the prognosis/effects over time of bipolar disorder?
      • Is it possible to prevent bipolar disorder?
      • Where can people find more information about bipolar disorder, bipolar disorder support groups, and doctors who treat it?
      • Where can people find support to help them or someone they know cope with bipolar disorder?
    • Borderline Personality Disorder (BPD) Borderline personality disorder is a serious mental illness characterized by pervasive instability in moods, interpersonal...learn more »
      In This Article
      Borderline Personality Disorder (BPD) Article
      • Borderline personality disorder facts
      • What is borderline personality disorder (BPD)?
      • What other disorders often occur with BPD?
      • What causes borderline personality disorder?
      • What are the risk factors for borderline personality disorder?
      • What are borderline personality disorder symptoms and signs?
      • How do health-care professionals diagnose borderline personality disorder?
      • What is the treatment for borderline personality disorder?
      • How can someone find a specialist who treats borderline personality disorder?
      • What are borderline personality disorder complications?
      • What is the prognosis of people with borderline personality disorder?
      • Is it possible to prevent borderline personality disorder?
      • Where can I get more information on borderline personality disorder?
    • Brain Tumor A brain tumor can be either benign (non cancerous) or malignant (cancerous), primary, or secondary. Causes and risk factors...learn more »
      In This Article
      Brain Tumor Article
      • Brain tumor facts*
      • What is the brain?
      • What are the tumor grades and types?
      • Tumor grade
      • Types of primary brain tumors
      • What are the risk factors for brain tumors?
      • What are the symptoms of a brain tumor?
      • How are brain tumors diagnosed?
      • What is the treatment for a brain tumor?
      • What type of surgery is available for brain tumors?
      • Radiation therapy for brain tumors
      • Chemotherapy for brain tumors
      • What about a second opinion for brain tumor treatment?
      • Nutrition during brain tumor treatment
      • What supportive care is available for patients and caregivers?
      • What about rehabilitation after brain tumor treatment?
      • What about follow-up care after brain tumor treatment?
      • Sources of support
      • Taking part in cancer research
    • Dementia Dementia is defined as a significant loss of intellectual abilities such as memory capacity, severe enough to interfere with...learn more »
      In This Article
      Dementia Article
      • Dementia facts
      • What is dementia?
      • What causes dementia?
      • How is dementia diagnosed?
      • What are the stages of dementia?
      • What are the early signs and symptoms of dementia?
      • What are the risk factors for dementia?
      • What is the treatment for dementia?
      • Can dementia be prevented?
      • What is the prognosis and life expectancy for someone with dementia?
      • What are the different types of dementia?
      • How does one cope with being the caretaker of someone with dementia?
    • Depression Depression is an illness that involves the body, mood, and thoughts and affects the way a person eats and sleeps, the way one...learn more »
      In This Article
      Depression Article
      • Depression facts
      • What is a depressive disorder?
      • What are myths about depression?
      • What are the types of depression, and what are depression symptoms and signs?
      • Depression symptoms and signs in men
      • Depression symptoms and signs in women
      • Depression symptoms and signs in teenagers
      • Depression symptoms and signs in children
      • What are the risk factors and causes of depression?
      • Postpartum depression
      • What tests do health-care professionals use to diagnose depression?
      • What treatments are available for depression?
      • What is the general approach to treating depression?
      • What about sexual dysfunction related to antidepressants?
      • What about discontinuing antidepressants?
      • What are complications of depression?
      • What is the prognosis for depression?
      • Is it possible to prevent depression?
      • What about self-help and home remedies for depression?
      • How can someone help a person who is depressed?
      • Where can one seek help for depression?
      • What is in the future for depression?
      • Where can people find more information about depression?
    • Drug Abuse Drug addiction is a chronic disease that causes drug-seeking behavior and drug use despite negative consequences to the user and...learn more »
      In This Article
      Drug Abuse Article
      • Drug use disorder facts
      • What is drug use disorder?
      • What types of drugs are commonly abused?
      • What are the physical and psychological effects of drug use disorders?
      • What are causes and risk factors for developing a drug use disorder?
      • What are warning signs that you or a loved one may have a drug use disorder?
      • What are symptoms and signs of drug use disorder?
      • What happens to your brain when you take drugs?
      • How do health-care professionals diagnose drug addiction?
      • What is the treatment for drug addiction?
      • What are complications of drug addiction?
      • What is the prognosis of drug use disorder?
      • Is it possible to prevent drug abuse and addiction?
      • Where can people get more information and help for drug use disorders?
    • ICU Psychosis ICU psychosis is a disorder (also a form of delirium or acute brain failure) in which patients in an intensive care unit or a...learn more »
      In This Article
      ICU Psychosis Article
      • ICU psychosis facts
      • What is ICU psychosis?
      • What causes ICU psychosis?
      • What are the symptoms of ICU psychosis?
      • How is ICU psychosis diagnosed?
      • How is ICU psychosis treated?
      • Can ICU psychosis be prevented?
      • How long does ICU psychosis last?
      • How common is ICU psychosis?
      • What is an example of a situation of ICU psychosis?
      • Can ICU psychosis be dangerous?
    • Lewy Body Dementia (Dementia with Lewy Bodies) Lewy body dementia (LBD or dementia with Lewy bodies) is one the most common causes of dementia. There are two types of LBD: 1)...learn more »
      In This Article
      Lewy Body Dementia (Dementia with Lewy Bodies) Article
      • Lewy body dementia facts*
      • Lewy body dementia (LBD) introduction
      • What are Lewy bodies?
      • What is Lewy body dementia (LBD)?
      • What are the types of Lewy body dementia (LBD)?
      • Who is affected by Lewy body dementia (LBD)?
      • What are the causes and risk factors for Lewy body dementia (LBD)?
      • What are the common symptoms of Lewy body dementia (LBD)?
      • Cognitive symptoms of Lewy body dementia
      • Behavoiral and mood symptoms of Lewy body dementia
      • Sleep disorders associated with Lewy body dementia
      • Movement symptoms of Lewy body dementia
      • Other Lewy body dementia symptoms
      • How is Lewy body dementia (LBD) diagnosed?
      • What is the treatment and management of Lewy body dementia (LBD)?
      • Medications for Lewy body dementia
      • Medications for cognitive symptoms
      • Medications for movement symptoms
      • Medications for sleep disorders
      • Medications for behavioral and mood problems
      • Other treatment considerations
    • Mental Health Mental health is an optimal way of thinking, relating to others, and feeling. All of the diagnosable mental disorders fall under...learn more »
      In This Article
      Mental Health Article
      • Mental health and mental illness facts
      • What is mental health?
      • What is mental illness?
      • What are common types of mental illness?
      • What are the causes and risk factors for mental illness?
      • What are symptoms and signs of mental illness?
      • How is mental illness diagnosed?
      • What is the treatment for a mental health problem?
      • Can mental health disorders be prevented?
      • What is the prognosis for mental-health problems?
      • Where can people get support for mental health disorders?
      • Where can people get more information about mental illnesses?
    • Multiple Sclerosis (MS) Multiple sclerosis or MS is an autoimmune disorder in which brain and spinal cord nerve cells become demyelinated. This damage...learn more »
    • Parkinson's Disease Parkinson's disease is a slowly progressive neurological disease characterized by a fixed inexpressive face, a tremor at rest,...learn more »
      In This Article
      Parkinson's Disease Article
      • Parkinson's disease facts
      • What is Parkinson's disease?
      • What causes Parkinson's disease?
      • What genes are linked to Parkinson's disease?
      • Who is at risk for Parkinson's disease?
      • What are the symptoms of Parkinson's disease?
      • What other conditions resemble Parkinson's disease?
      • How is Parkinson's disease diagnosed?
      • What is the treatment for Parkinson's disease?
      • How can people learn to cope with Parkinson's disease?
      • Can Parkinson's disease be prevented?
      • What is the prognosis of Parkinson's disease?
    • Posttraumatic Stress Disorder Post-traumatic stress disorder (PTSD), a psychiatric condition, can develop after any catastrophic life event. Symptoms include...learn more »
      In This Article
      Posttraumatic Stress Disorder Article
      • PTSD facts
      • What is posttraumatic stress disorder (PTSD)?
      • What are the effects of PTSD?
      • What causes PTSD?
      • What are PTSD risk factors and protective factors?
      • What are PTSD symptoms and signs?
      • How is PTSD assessed?
      • What is the treatment for PTSD?
      • What is the prognosis for PTSD?
      • Is it possible to prevent PTSD?
      • How can people cope with PTSD?
      • Where can people get help for PTSD?
    • Schizophrenia Schizophrenia is a disabling brain disorder that may cause hallucinations and delusions and affect a person's ability to...learn more »
      In This Article
      Schizophrenia Article
      • Schizophrenia facts
      • What is the definition of schizophrenia?
      • How common is schizophrenia in children?
      • What is the history of schizophrenia?
      • What are schizophrenia causes? Is schizophrenia hereditary?
      • What are schizophrenia symptoms and signs?
      • How do health-care professionals diagnose schizophrenia? Are there particular tests that detect schizophrenia?
      • What are treatments for schizophrenia and the side effects of those treatments?
      • What are potential complications of schizophrenia? What is the prognosis for schizophrenia?
      • What research is being done on schizophrenia?
      • Where can people get more information about schizophrenia? How can people find a support group, specialists who treat the illness, or other assistance for schizophrenia?
    • Schizotypal Personality Disorder Schizotypal personality disorder is characterized by odd behaviors, feelings, perceptions, and ways of relating to others that...learn more »
      In This Article
      Schizotypal Personality Disorder Article
      • Schizotypal personality disorder facts
      • What is schizotypal personality disorder?
      • What are causes and risk factors for schizotypal personality disorder?
      • What are schizotypal personality disorder symptoms and signs?
      • What tests diagnose schizotypal personality disorder?
      • What is the treatment for schizotypal personality disorder?
      • What are complications of schizotypal personality disorder? What is the prognosis of schizotypal personality disorder?
      • Is it possible to prevent schizotypal personality disorder?
      • Where can people get more information on schizotypal personality disorder?
    • Stroke A stroke is an interruption of the blood supply to part of the brain caused by either a blood clot (ischemic) or bleeding...learn more »
      In This Article
      Stroke Article
      • Stroke facts
      • What is a stroke?
      • What are the different types of stroke?
      • What causes a stroke?
      • What are the risk factors for stroke?
      • What is a transient ischemic attack (TIA)?
      • What are the warning signs of a stroke?
      • What are the symptoms of a stroke?
      • How is a stroke diagnosed?
      • What is the treatment for stroke?
      • What is the prognosis for stroke?
      • Is recovery after a stroke possible?
      • What is stroke rehabilitation?
      • Can strokes be prevented?
    • Teen Drug Abuse Drugs commonly abused by teens include tobacco products, marijuana, cold medications, inhalants, depressants, stimulants,...learn more »
      In This Article
      Teen Drug Abuse Article
      • Teen drug abuse facts
      • What drugs are abused by teenagers?
      • What are some adolescent drug use statistics?
      • What are the dangerous effects of drug use in teens?
      • How can parents prevent drug use?
      • What are the symptoms and warning signs of drug abuse?
      • What is drug abuse?
      • What are the causes and risk factors of teen drug use?
      • What are the symptoms of drug abuse in teens?
      • What is the treatment of drug intoxication?
      • What are treatments for drug addiction?
      • Where can a person get help for teen drug abuse?
    • Transient Ischemic Attack (TIA, Mini-Stroke) When a portion of the brain loses blood supply, through a blood clot or embolus, a transient ischemic attack (TIA, mini-stroke)...learn more »
      In This Article
      Transient Ischemic Attack (TIA, Mini-Stroke) Article
      • Transient ischemic attack (TIA) facts
      • What is a transient ischemic attack (TIA)?
      • What are the causes of transient ischemic attack (TIA)?
      • What are the risk factors for transient ischemic attack (TIA)?
      • What are the symptoms of transient ischemic attack (TIA)?
      • How is transient ischemic attack (TIA) diagnosed?
      • What is the treatment for a transient ischemic attack (TIA)?
      • What is the prognosis for transient ischemic attack (TIA)?
Other Causes of Paranoia
  • Delusional Disorder
  • Low Self-Esteem
  • Medications
  • Paranoid Personality Disorder
  • Psychosis
  • Sleep Deprivation
Examples of Medications for Paranoia


Symptoms & Signs A-Z List



Emotional Wellness

Get tips on therapy and treatment.

advertisement
advertisement
Use Pill Finder Find it Now See Interactions

Pill Identifier on RxList

  • quick, easy,
    pill identification

Find a Local Pharmacy

  • including 24 hour, pharmacies

Interaction Checker

  • Check potential drug interactions
Search the Medical Dictionary for Health Definitions & Medical Abbreviations