What is Delirium?
Delirium is a serious disturbance in mental abilities that results in confused thinking and reduced awareness of the environment. It is often characterized by a sudden onset of confusion, changes in attention, and fluctuations in consciousness. Delirium can occur in various settings, especially in hospitals, and is often reversible when the underlying cause is identified and treated.
What are the Types of Delirium?
Hyperactive Delirium: This type is characterized by agitation, restlessness, and increased motor activity. Patients may experience hallucinations or delusions and have a heightened state of arousal.
Hypoactive Delirium: In this type, patients may appear lethargic, withdrawn, or sluggish. They may have reduced responsiveness to stimuli and decreased alertness.
Mixed Delirium: Patients with mixed delirium exhibit features of both hyperactive and hypoactive delirium, alternating between agitation and lethargy.
What are the Symptoms of Delirium?
Confusion: Difficulty understanding what is happening and disorientation to time, place, and identity.
Altered Level of Consciousness: Fluctuating states of alertness, ranging from hyperarousal to drowsiness.
Inattention: Difficulty focusing or sustaining attention on tasks or conversations.
Disorganized Thinking: Speech may be incoherent, and thoughts may be difficult to follow.
Hallucinations or Delusions: Experiencing things that are not there (visual or auditory hallucinations) or holding false beliefs.
Emotional Changes: Rapid shifts in mood, including agitation, fear, anxiety, or euphoria.
What are the Causes?
Underlying Medical Conditions: Infections (such as urinary tract infections or pneumonia), metabolic imbalances, dehydration, or organ failure can trigger delirium.
Medications: Certain medications, especially sedatives, opioids, and anticholinergics, can contribute to delirium.
Substance Withdrawal: Withdrawal from alcohol, benzodiazepines, or other substances can lead to delirium.
Age: Older adults are at higher risk for delirium, especially those with pre-existing cognitive impairments.
Hospitalization: Being hospitalized, especially in intensive care units, increases the risk due to factors such as medications, infections, and the unfamiliar environment.
Cognitive Impairment: Individuals with pre-existing dementia or cognitive decline are more susceptible to developing delirium.
Diagnosis and Treatment at Mind Clinic:
Our medical professionals will diagnose delirium through a combination of physical examination, medical history, and cognitive tests. Blood tests, brain scans, or other diagnostic tools may be used to identify the underlying cause.
Treatment focuses on:
Identifying and addressing the underlying cause: Whether it's an infection, medication, or other factors, then referral to related medical specialists.
Managing symptoms: Providing a calm and safe environment, ensuring hydration and nutrition, and sometimes using medications for severe agitation or psychosis.
When to Seek Help:
Sudden changes in mental status
Disorientation or confusion that worsens
Agitation or unusual behavior that doesn’t improve
Hallucinations or delusions
References
American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Arlington, VA: American Psychiatric Publishing.
Fong, T. G., Jones, R. N., Rudolph, J. L., et al. (2009). Delirium: An important but under-recognized complication of hospitalization. Journal of Hospital Medicine, 4(7), 414-421. https://doi.org/10.1002/jhm.426
Inouye, S. K. (2006). Delirium in older persons. New England Journal of Medicine, 354(11), 1157-1165. https://doi.org/10.1056/NEJMra052321
World Health Organization. (2018). Mental health of older adults. World Health Organization. https://www.who.int/news-room/fact-sheets/detail/mental-health-of-older-adults