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What is delirium?

Delirium is a sudden decline in brain function leading to mental dysfunction. In a state of delirium, a person experiences rapidly changing mental states. It is also called as an acute confusional state.

What are its main signs and symptoms?

  • Rapid changes in mental state are characteristic of delirium. These changes are seen in:
  1. Sudden confusion (disorientation)
  2. Alertness and attention
  3. Feeling and perception
  4. Muscular coordination: In a state of delirium, one may move too slowly (hypoactive) or show restless, agitated movements (hyperactive)
  5. Sleeping patterns or routine 
  6. Emotions and personality
  7. Disturbed consciousness
  8. Impairment in cognitive skills
  • Other symptoms include:
  1. Urinary incontinence
  2. Reduced short-term memory and recall (Read more: Memory loss causes)
  3. Clouding of consciousness or awareness
  4. Disorganized thinking that is evident when opinions are voiced
  5. Tremor-like movements triggered by changes in the nervous system
  6. Difficulty in concentrating

What are its main causes?

Delirium is a multifactorial condition.:  

  •  Delirium may occur secondary to an underlying condition, which may include:
    • Dementia (an irreversible, slow onset disorder affecting an individual’s memory)
    • Life-threatening illnesses like stroke; neurologic infections/inflammations like meningitis, encephalitis, and brain abscess; brain tumour; brain injury
    • Major surgery
  • Some common, reversible causes include: (non-neurologic causes)
    • Imbalance in chemicals that transmit nerve signals.
    • Drug overdose, adverse drug reactions, or drug interactions.
    • Alcohol abuse. Delirium may also occur as a withdrawal symptom when one tries to stop habitual drinking of alcohol.
    • Electrolyte imbalance, hormonal disorders.
    • Systemic infections, urinary tract infections, respiratory system infections.

 How is it diagnosed and treated?

 Medical history of the person along with patient observation is vital to diagnose delirium.

  • Your doctor may also require you to undergo a few tests in order to assess neurological function:
    • Cognitive function tests
    • Test for perception and motor skill evaluation.
    • Your doctor may also evaluate your thinking with some simple and standard questions.
  • Other investigations include:
    • Chest X-ray
    • EEG (Electroencephalogram)
    • Cerebrospinal fluid test
    • MRI or CT scans of the brain
    • Urine tests

Delirium shows symptoms similar to dementia. Sudden occurrence of delirium and visual hallucinations help in differentiating it from dementia.

Treatment for delirium addresses the underlying causative factors.

  • Non- pharmacological methods include:
    • Supportive care: Medical and hospital care should be given to the patient, attention to social needs and the patient’s environment is essential. Creating a stable and familiar environment helps the patient.
    • Sleeping routines should be maintained. Problems related to sleep should be treated with milk, massage, or herbal tea.
    • Physiotherapy and daily walk helps in improving motor skills.
    • It is always better to hire a professional nurse at home.
    • Behaviour modification therapy.
  • Pharmacological therapy includes:
    • Medications to treat underlying precipitating factors like infection, pain, chronic illness, and allergy.
    • Antipsychotic drugs.
    • Rarely, mild sedatives may be used in case of agitation and restlessness.
  1. Medicines for Delirium
  2. Doctors for Delirium
Dr. Saurabh Mehrotra

Dr. Saurabh Mehrotra


Dr. Om Prakash L

Dr. Om Prakash L


Dr. Anil Kumar

Dr. Anil Kumar


Medicines for Delirium

Medicines listed below are available for Delirium. Please note that you should not take any medicines without doctor consultation. Taking any medicine without doctor's consultation can cause serious problems.

Medicine NamePack SizePrice (Rs.)
Libotryp TabletLIBOTRYP TABLET 30Nos78
Amitar Plus TabletAmitar Plus Tablet18
Amitop PlusAmitop Plus 25 Mg/10 Mg Tablet29
Amitril PlusAmitril Plus 12.5 Mg/5 Mg Tablet14
Amitryn CAmitryn C 12.5 Mg/5 Mg Tablet24
Amitryn C PlusAmitryn C Plus 25 Mg/10 Mg Tablet37
ADEL 32 Opsonat DropADEL 32 Opsonat Drop200
Amivane ForteAmivane Forte 25 Mg/10 Mg Tablet21
Bjain Cannabis indica DilutionBjain Cannabis indica Dilution 1000 CH63
Amivane PlusAmivane Plus 12.5 Mg/5 Mg Tablet20
Amixide HAmixide H 12.5 Mg/5 Mg Tablet28
AmizeAmize 12.5 Mg/5 Mg Tablet21
Amize ForteAmize Forte 25 Mg/10 Mg Tablet26
AmizepAmizep 25 Mg/10 Mg Tablet0
Schwabe Anhalonium lewinii CHSchwabe Anhalonium lewinii 12 CH96
Amizep HAmizep H 12.5 Mg/5 Mg Tablet0
Amypres C (Psycormedies)Amypres C 12.5 Mg/5 Mg Tablet10
Bjain Scopolaminum hydrobromicum DilutionBjain Scopolaminum hydrobromicum Dilution 1000 CH63
ChlortripChlortrip 12.5 Mg/5 Mg Tablet12
ADEL 43 Cardinorma DropADEL 43 Cardinorma Drop200
ChlotripChlotrip 12.5 Mg/5 Mg Tablet14
ADEL 44 Venorbis DropADEL 44 Venorbis Drop200
SBL Euphorbia lathyris DilutionSBL Euphorbia lathyris Dilution 1000 CH86

Do you or anyone in your family have this disease? Please do a survey and help others


  1. American Heart Association. What is Venous Thromboembolism (VTE)?. [Internet]
  2. MedlinePlus Medical Encyclopedia: US National Library of Medicine; Delirium
  3. Ramírez Echeverría MdL, Paul M. Delirium. Delirium. StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2019 Jan-
  4. Prinka, Arvind Sharma. Comparative Study of Delirium in Emergency and Consultation Liaison- A Tertiary Care Hospital Based Study in Northern India. J Clin Diagn Res. 2016 Aug; 10(8): VC01–VC05. PMID: 27656535
  5. Dementia Australia. Delirium and dementia . Australia; [Internet]
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