Delirium: sudden confusion is a medical warning sign
डेलिरियम (अचानक भ्रम)
Delirium is a sudden change in attention and awareness that develops over hours to days and fluctuates. It is caused by an underlying physical problem and is a medical emergency.
Medically reviewed by Dr. Kuldeep Budania, MBBS, MD Psychiatry
Common symptoms
- Sudden confusion, not knowing time or place
- Symptoms worse in the evening or night
- Agitation, pulling lines, trying to get out of bed
- Or unusual drowsiness and withdrawal
- Seeing things, fearfulness
Causes
- Infections (urine, chest), dehydration, low sodium or sugar
- Surgery, anaesthesia, pain, constipation, urine retention
- New medicines or stopping alcohol/sleeping pills
- Dementia increases the risk
Risk factors
- Older age, dementia, poor eyesight or hearing
- Infections (urine, chest), dehydration, surgery, low sodium
- New medicines, sleeping pills, or alcohol withdrawal
How it is diagnosed
- Sudden onset of confusion that fluctuates over the day — a medical emergency
- Urgent tests for infection, sugar, salts, kidney and liver function
Classification: ICD-10 F05 · ICD-11 6D70
Treatment options
- 1Find and treat the physical cause — usually with the physician/hospital team
- 2Calm, well-lit room; family presence; glasses and hearing aids
- 3Regular sleep–wake routine, fluids and mobility
- 4Short-term medicines only if agitation is dangerous
Psychotherapy and counselling
- Reorientation: clock, calendar, familiar faces, glasses and hearing aids
Guidance for family
- Stay with the person, speak calmly and keep lights on in the evening
- Seek urgent medical care — delirium usually has a treatable physical cause
When to see a psychiatrist
- Any sudden confusion — same-day medical assessment
- Fever, breathlessness, not eating or drinking
- Agitation risking falls or injury
Thoughts of self-harm or a medical emergency? Call Tele-MANAS 14416 (24×7, free) or 112.
Frequently asked questions
Is delirium the same as dementia?
No. Delirium is sudden and usually reversible; dementia develops slowly over months to years.
Should we give a sleeping pill?
Not without a doctor's advice — some sleeping pills worsen delirium.
Can it be prevented?
Often — good hydration, mobility, sleep routine, avoiding risky medicines and family presence help.
Help is available — confidential, in Hindi or English.
Private video consultation from anywhere in India with an Ajmer-based psychiatrist. Psychiatry consultation ₹500.
This page is for education and does not replace a personal consultation. Do not start or stop any medicine without a doctor's advice.