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Hallucinations: Introduction

Hallucinations can arise from a high fever or other illness involving a fever. These type of febrile hallucinations arise particularly in children and the elderly.

Hallucinations can affect any of the senses: visual hallucinations (seeing things), aural hallucinations (hearing noises or voices), taste hallucinations, or sensory hallucinations.

Chronic cases of hallucinations and delusions typify psychiatric disorders such as schizophrenia and other delusional disorders. Delusions differ from hallucinations in that delusions refer to the mind's reasoning and thoughts, rather than its sensory inputs.

It is important to be precise about this symptom, and to dinstinguish true hallucinations from other symptoms such as nightmares, vision changes, delirium, dementia, aura (e.g. the "aura" before a migraine or faint), and delusions....more »

» Review Causes of Hallucinations: Causes | Symptom Checker » | Assessment Questionnaire »

Causes of Hallucinations:

The following medical conditions are some of the possible causes of Hallucinations. There are likely to be other possible causes, so ask your doctor about your symptoms.

» Review Causes of Hallucinations: Causes | Symptom Checker » | Assessment Questionnaire »

Common Causes of Hallucinations

Home Diagnostic Testing and Hallucinations

Home medical tests possibly related to Hallucinations:

Causes of Types of Hallucinations:

Review the causes of these more specific types of Hallucinations:

Review causes of more specific types of Hallucinations:

Hallucinations: Symptom Checker

Listed below are some combinations of symptoms associated with Hallucinations, as listed in our database. Visit the Symptom Checker, to add and remove symptoms and research your condition.

Symptom Checker

Symptom Checker

Hallucinations Treatments

Some of the possible treatments listed in sources for treatment of Hallucinations may include:

Review further information on Hallucinations Treatments.

Stories from Users for Hallucinations

Real-life user stories relating to Hallucinations:

Message Boards for Hallucinations

Symptom specific forums: The following patient stories in our interactive forums and message boards relate to Hallucinations or relevant symptoms:

Diagnostic tests for Hallucinations:

Various tests are used in the diagnosis of Hallucinations. Some of these are listed below :

  • Mental state examination - including appearance, behavior, rate and continuity of speech, mood, affect, thought content, evidence of any hallucinations or abnormal beliefs, orientation to time, place and person, attention and concentration, short-term memory, insight and judgement.
  • Physical examination
  • more tests...»

Medications or substances causing Hallucinations:

The following drugs, medications, substances or toxins are some of the possible causes of Hallucinations as a symptom. Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments.

Drug interactions causing Hallucinations:

When combined, certain drugs, medications, substances or toxins may react causing Hallucinations as a symptom. Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments.

  • Parnate and tranylcypromine sulfate interaction
  • Prozac and Dextromethorphan interaction
  • Prozac Weekly and Dextromethorphan interaction
  • Sarafem and Dextromethorphan interaction
  • Tagamet (Cimetidine) and Adapin (Doxepin) interaction
  • Tagamet (Cimetidine) and Sinequan (Doxepin) interaction
  • more interactions...»

Hallucinations: Comorbid Symptoms

Some of the comorbid or associated medical symptoms for Hallucinations may include these symptoms:

Causes of General Symptom Types

Research the causes of these more general types of symptom:

Causes of Similar Symptoms to Hallucinations

Research the causes of these symptoms that are similar to, or related to, the symptom Hallucinations:

Assessment Questionnaire: Questions your doctor may ask (and why!)

During a consultation, your doctor will use various techniques to assess the symptom: Hallucinations. These will include a physical examination and possibly diagnostic tests. (Note: A physical exam is always done, diagnostic tests may or may not be performed depending on the suspected condition) Your doctor will ask several questions when assessing your condition. It is important to openly share any pertinent information to help your doctor make an accurate diagnosis.

It is also very important to bring an up-to-date list of all of your all medical conditions, medications including dosages, and names of numbers of any specialist you see.

Create your printable checklist here.

See Hallucinations Assessment Questionnaire (21 listings)

Hallucinations: Deaths

Read more about causes and Hallucinations deaths.

Misdiagnosis and Hallucinations

Various mental health symptoms caused by rare epilepsy: Temporal lobe epilepsy is a less common form of epilepsy that does not have the typical more »

Lupus is often misdiagnosed as other conditions: Systemic lupus erythematosus (SLE), often simply called "lupus", is a difficult disease to diagnose and can manifest with numerous symptoms. Some of the more »

Undiagnosed stroke leads to misdiagnosed aphasia: BBC News UK reported on a man who had been institutionalized and treated for mental illness because he suffered from sudden inability to speak. This was initially misdiagnosed as a "nervous breakdown" more »

Dementia may be a drug interaction: A common scenario in aged care is for a patient to show mental decline to dementia. Whereas this can, of course, occur due to various medical conditions, such as a stroke or more »

ADHD under-diagnosed in adults: Although the over-diagnoses of ADHD in children is a well-known controversy, the reverse side related to adults. Some adults can remain undiagnosed, and indeed the condition has usually been overlooked throughout childhood. more »

Bipolar disorder misdiagosed as various conditions by primary physicians: Bipolar disorder (manic-depressive disorder) often fails to be diagnosed correctly by primary care physicians. Many patients with bipolar more »

Eating disorders under-diagnosed in men: The typical patient with an eating disorder is female. The result is that men with eating disorders often fail to more »

Depression undiagnosed in teenagers: Serious bouts of depression can be undiagnosed in teenagers. The "normal" moodiness of teenagers can cause more »

Undiagnosed anxiety disorders related to depression: Patients with depression (see symptoms of depression) may also have undiagnosed anxiety disorders (see symptoms of anxiety disorders). Failure to diagnose these anxiety disorders may worsen more »

Hallucinations: Research Related Doctors & Specialists

Other ways to find a doctor, or use doctor, physician and specialist online research services:

Hospitals & Clinics: Hallucinations

Research extensive quality ratings and patient safety measures for hospitals, clinics and medical facilities in health specialties related to Hallucinations:

Hallucinations: Related Rare Diseases

Rare types of medical conditions and diseases in related medical categories:

Hallucinations: Undiagnosed Conditions

Conditions that are commonly undiagnosed in related areas may include:

Causes of Hallucinations listed in Disease Database:

Other medical conditions listed in the Disease Database as possible causes of Hallucinations as a symptom include:

Definitions of Hallucinations:

A hallucination is a false sensory perception in the absence of an external stimulus, as distinct from an illusion which is a misperception of an external stimulus. (from Wikipedia)
- (Source - Diseases Database)

Organs affected by Hallucinations:

The list of organs typically affected by Hallucinations may include, but is not limited to:

Detailed list of causes of Hallucinations

The list below shows some of the causes of Hallucinations mentioned in various sources:

How Common are these Causes of Hallucinations?

This information refers to the general prevalence and incidence of these diseases, not to how likely they are to be the actual cause of Hallucinations. Of the 288 causes of Hallucinations that we have listed, we have the following prevalence/incidence information:

  • 5 causes are "very common" diseases
  • 11 causes are "common" diseases
  • 3 causes are "uncommon" diseases
  • 2 causes are "rare" diseases
  • 4 causes are "very rare" diseases
  • 277 causes have no prevalence information.

Conditions listing medical symptoms: Hallucinations:

The following list of conditions have 'Hallucinations' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.

Select from the following alphabetical view of conditions which include a symptom of Hallucinations or choose View All.

View All A B C D E F G H I K L M N O P R S T U V W X























Conditions listing medical complications: Hallucinations:

The following list of medical conditions have Hallucinations or similar listed as a medical complication in our database. The distinction between a symptom and complication is not always clear, and conditions mentioning this symptom as a complication may also be relevant. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.




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Causes of Hallucinations Based on Risk Factors

This information shows analysis of the list of causes of Hallucinations based on whether certain risk factors apply to the patient:

  • Travel - has the patient travelled recently?
  • Diabetes - history of diabetes or family history of diabetes?

    Doctors and specialists: Who should I consult about Hallucinations?

    Depending on the seriousness of the onset of Hallucinations, you may want to consult one of the following medical professionals.

    Important:In extreme cases, always seek advice from emergency services :

    Classifications of Hallucinations:

    Subtypes of Hallucinations:

    Auditory hallucinations (48 causes), Hearing voices (7 causes)

    Medical Conditions associated with Hallucinations:

    Mental problems (3121 causes), Behavioral symptoms (4608 causes), Personality symptoms (4029 causes), Cognitive symptoms (3664 causes), Psychiatric symptoms (971 causes)

    Symptoms related to Hallucinations:

    Paranoia (115 causes), Delusions (176 causes), Schizophrenia, Alcohol withdrawal, Brain tumours (14 causes), Auditory hallucinations (48 causes), Visual hallucinations (55 causes), Cocaine abuse (2 causes), Tactile hallucination, Olfactory hallucinations

    Medical articles on signs and symptoms:

    Doctor-patient articles related to symptoms and diagnosis:

    These general medical articles may be of interest:

    Medical News summaries about Hallucinations

    Our news pages contain the following medical news summaries about Hallucinations and many other medical conditions:

    Related medical articles from our Disease Center for Hallucination:

    More Ways To Research Medical Signs and Symptoms:


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