Confusion

In psychology, confusion is the quality or emotional state of being bewildered or unclear. The term "acute mental confusion"[1] is often used interchangeably with delirium[2] in the International Statistical Classification of Diseases and Related Health Problems and the Medical Subject Headings publications to describe the pathology. These refer to the loss of orientation, or the ability to place oneself correctly in the world by time, location and personal identity. Mental confusion is sometimes accompanied by disordered consciousness (the loss of linear thinking) and memory loss (the inability to correctly recall previous events or learn new material).[3]

## Contents

* 1 Etymology
* 2 Causes
* 2.1 Other
* 2.2 Differential diagnosis
* 3 See also
* 4 References
* 5 External links

## Etymology

The word confusion derives from the Latin word, confundo, which means "confuse, mix, blend, pour together, disorder, embroil."

## Causes

Confusion may result from drug side effects or from a relatively sudden brain dysfunction. Acute confusion is often called delirium (or "acute confusional state"),[4] although delirium often includes a much broader array of disorders than simple confusion. These disorders include the inability to focus attention; various impairments in awareness, and temporal or spatial dis-orientation. Mental confusion can result from chronic organic brain pathologies, such as dementia,[5] as well.

### Other

* Acute stress reaction
* Alcoholism
* Anemia
* Anticholinergic toxicity[6]
* Anxiety
* Brain damage
* Brain tumor
* Concussion
* Dehydration
* Encephalopathy
* Epileptic seizure
* Depression
* Fatigue
* Fever
* Brain injury
* Heat stroke
* Hypoglycemia
* Hypothermia
* Hypothyroidism
* Jet lag
* Kidney failure
* Kidney infection (pyelonephritis)
* Lactic acidosis
* Lassa fever
* Lewy body dementia
* Listeria
* Lyme disease
* Meningitis
* Postpartum depression & Postpartum psychosis
* Psychotic Disorder
* Reye's syndrome
* Rocky Mountain spotted fever (RMSF)
* Schizophrenia
* Sick building syndrome
* Sleep apnea
* Stroke
* Yellow fever
* STDs & STIs
* Streptococcal Infections
* Toxicity
* Toxic shock syndrome
* Transient ischemic attack (TIA, Mini-Stroke)
* Vitamin B12 deficiency
* Acute Porphyria
* West Nile virus[7]

### Differential diagnosis

The most common causes of drug induced acute confusion are dopaminergic drugs (used for the treatment of Parkinson's disease), diuretics, tricyclic, tetracyclic antidepressants and benzodiazepines or alcohol. The elderly, and especially those with pre-existing dementia, are most at risk for drug induced acute confusional states.[8] New research is finding a link between vitamin D deficiency and cognitive impairment (which includes "foggy brain").[9]

## See also

* Cognitive distortion

## References

1. ↑ Confusion Definition on Oxford Dictionaries.
2. ↑ Delirium , Symptom Finder online.
3. ↑ confusion in TheFreeDictionary, citing: Dorland's Medical Dictionary for Health Consumers; 2007; Saunders.
4. ↑ Acute Confusional State; Dr. Gurvinder Rull; patient.info; Document ID/Version/Reference: 1714/22/bgp2104; updated: 13 Jan 2009; accessed: when?.
5. ↑ Ried, S.; Gutzmann, H. (2003-08-01). "Das Pflegephänomen "Chronische Verwirrtheit" im Kontext der Diagnose "Demenz"". Zeitschrift für Gerontologie und Geriatrie 36 (4): 297–302. doi:10.1007/s00391-003-0129-6. ISSN 0948-6704. PMID 12937935. http://dx.doi.org/10.1007/s00391-003-0129-6.
6. ↑ Broderick, E. D.; Metheny, H.; Crosby, B. (2021). StatPearls. PMID 30521219.
7. ↑ "Confusion: Symptoms, Signs, Causes & Treatment". MedicineNet. https://www.medicinenet.com/confusion/symptoms.htm.
8. ↑ Hufschmidt, A.; Shabarin, V.; Zimmer, T. (Dec 2009). "Drug-induced confusional states: the usual suspects?". Acta Neurologica Scandinavica 120 (6): 436–8. doi:10.1111/j.1600-0404.2009.01174.x. PMID 19804475.
9. ↑ Etgen, T.; Sander, D.; Bickel, H.; Sander, K.; Förstl, H. (2012). "Vitamin D Deficiency, Cognitive Impairment and Dementia: A Systematic Review and MetaAnalysis". Dementia and Geriatric Cognitive Disorders 33 (5): 297–305. doi:10.1159/000339702. PMID 22759681. https://mediatum.ub.tum.de/doc/1218731/file.pdf.

## External links

Classification|

* ICD-10: R41.0
* ICD-9-CM: 298.9
* MeSH: D003221

|

External resources|

* MedlinePlus: 003205

* National Library of Medicine - National Institutes of Health

* v
* t
* e

[[Philosophy:EEmotions (Contrasting and categorization of emotions|list]])

Emotions|

* Acceptance
* Adoration
* Aesthetic emotions
* Affection
* Agitation
* Agony
* Amusement
* Anger
* Angst
* Anguish
* Annoyance
* Anticipation
* Anxiety
* Apathy
* Arousal
* Attraction
* Awe
* Boredom
* Calmness
* Compassion
* Confidence
* Contempt
* Contentment
* Courage
* Cruelty
* Curiosity
* Defeat
* Depression
* Desire
* Despair
* Disappointment
* Disgust
* Distrust
* Ecstasy
* Embarrassment
* Vicarious
* Empathy
* Enthrallment
* Enthusiasm
* Envy
* Euphoria
* Excitement
* Fear
* Flow (psychology)
* Frustration
* Gratification
* Gratitude
* Greed
* Grief
* Guilt
* Happiness
* Hatred
* Hiraeth
* Homesickness
* Hope
* Horror
* Hostility
* Humiliation
* Hygge
* Hysteria
* Indulgence
* Infatuation
* Insecurity
* Inspiration
* Interest
* Irritation
* Isolation
* Jealousy
* Joy
* Kindness
* Loneliness
* Longing
* Love
* Limerence
* Lust
* Mono no aware
* Neglect
* Nostalgia
* Outrage
* Panic
* Passion
* Pity
* Self-pity
* Pleasure
* Pride
* Grandiosity
* Hubris
* Insult
* Vanity
* Rage
* Regret
* Social connection
* Rejection
* Remorse
* Resentment
* Sadness
* Melancholy
* Saudade
* Schadenfreude
* Sehnsucht
* Self-confidence
* Sentimentality
* Shame
* Shock
* Shyness
* Sorrow
* Spite
* Stress
* Suffering
* Surprise
* Sympathy
* Tenseness
* Trust
* Wonder
* Worry

World views|

* Cynicism
* Defeatism
* Nihilism
* Optimism
* Pessimism
* Reclusion
* Weltschmerz

Related|

* Emotional intelligence

* v
* t
* e

Symptoms and signs: cognition, perception]], emotional state and behaviour (R40–R46, 780.0–780.5, 781.1)

Cognition|

| Alteration of
consciousness|

* Confusion (Delirium)
* Obtundation
* Psychosis
* Delusions
* Somnolence
* Stupor
* Sopor
* Unconsciousness
* Coma
* Persistent vegetative state
* Sleep
* Syncope

|

Fainting/Syncope|

* Carotid sinus syncope
* Heat syncope
* Vasovagal episode

Other|

* Amnesia
* Anterograde amnesia
* Retrograde amnesia
* Convulsion
* Dizziness
* Disequilibrium
* Presyncope/Lightheadedness
* Vertigo

Emotional state|

* Anger
* Anxiety
* Depression
* Fear
* Paranoia
* Hostility
* Irritability
* Suicidal ideation

Behavior|

* Verbosity
* Russell's sign

Perception/
sensation
disorder|

* Hallucination (Auditory hallucination)

* Olfaction
* Anosmia
* Hyposmia
* Dysosmia
* Parosmia
* Phantosmia
* Hyperosmia

* Synesthesia

* Taste
* Ageusia
* Hypogeusia
* Dysgeusia
* Parageusia
* Hypergeusia

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