What are the recent trends and demographic patterns of emergency psychiatric attendances in the United Kingdom over the past decade, including the impact of COVID‑19?

Trends in Emergency Psychiatric Attendance in the UK

Emergency psychiatric attendances in the UK showed an initial paradoxical decline during early COVID-19 lockdown (April 2020), followed by a return to baseline by September 2020, with underlying pre-pandemic trends showing mental health presentations comprising 4.2% of all emergency department visits and significant increases in specific populations, particularly children and adolescents with eating disorders and self-harm.

Pre-Pandemic Baseline Patterns

Emergency departments in England managed substantial psychiatric caseloads before COVID-19:

• Mental health conditions accounted for 4.2% of all ED attendances (median 3.2%, IQR 2.6% to 4.1%) in 2013/2014, representing a significant proportion of emergency care 1
• Demographic profile: 76.3% of psychiatric ED attendances were patients under 50 years, with 73.2% being White British ethnicity 1
• Socioeconomic gradient: 59.9% came from the two most deprived Index of Multiple Deprivation quintiles, indicating strong association with deprivation 1
• Temporal patterns: 68.0% occurred "out of hours" and 31.3% on weekends, with almost two-thirds arriving by ambulance 1

COVID-19 Impact: The Paradoxical Initial Decline

The pandemic created an unexpected pattern of reduced emergency psychiatric presentations initially:

Early Lockdown Period (March-April 2020)

• Mental illness rates were lower than expected in April 2020 based on historical trends, analyzed from over 14 million patient records in the UK 2
• Self-harm rates similarly decreased below expected levels in April 2020 2
• This decline likely reflected reduced healthcare access rather than improved mental health, with fewer primary care visits and missed diagnoses creating unmet needs 2

Recovery Phase (May-September 2020)

• Rates returned to expected levels by September 2020 across most psychiatric presentations 2
• The initial decline represented detection failure, not true reduction in psychiatric emergencies, suggesting accumulated unmet need 2

Psychological Distress Patterns

• Clinically significant distress rose from 18.9% (2018-2019) to 27.3% in late April 2020 during lockdown 2
• Depression and anxiety peaked in March 2020, then declined precipitously in the first weeks of lockdown before plateauing 2
• Depression remained elevated into 2021: 21% of the British population scored ≥10 on PHQ-9 in early 2021, double the pre-pandemic 10% baseline 2

Suicidal Ideation and Self-Harm

• Thoughts of suicide or self-harm increased to 18% among UK adults in late March to late April 2020, compared to 5.4% pre-pandemic 2
• However, actual suicide rates did not increase during early pandemic months, with some evidence of decreases 2

Longer-Term Trends (Past Decade)

Overall Inpatient Psychiatric Activity

• Hospital admission rates for all psychiatric disorders decreased 28.4% from 1998/99 to 2019/20 3
• Bed days decreased 38.3% over the same period, reflecting shorter stays and reduced capacity 3

Divergent Trends by Disorder

Increasing presentations:

• Anxiety disorders doubled over 22 years, increasing 2.9% annually (AAPC = 2.88; 95% CI: 2.61-3.16) 3
• Eating disorders doubled, increasing 3.4% annually (AAPC = 3.44; 95% CI: 3.04-3.85) 3

Decreasing presentations:

• Depression admissions among adults decreased 63.8% from 1998/99 to 2019/20 3

Children and Young People: The Most Concerning Trend

This population shows the most dramatic increases:

• Admissions for mental health concerns increased 65.0% from 2012-13 to 2021-22 (24,198 to 39,925), while all-cause admissions rose only 10.1% 4
• Mental health concerns accounted for 11.7% of all pediatric medical admissions by 2021-22 4
• Self-harm represented 53.4% of mental health admissions in children and young people 4

Age and gender patterns:

• Females aged 11-15 years showed 112.8% increase (9,091 to 19,349 admissions) 4
• Eating disorder admissions increased 514.6% (478 to 2,938) from 2012-13 to 2021-22 4
• Depression admissions in children increased 212.9%, contrasting sharply with the 63.8% decrease in adults 3

Service utilization characteristics:

• 7.8% of mental health admissions lasted >1 week compared to 3.5% for all-cause admissions 4
• 13.4% had repeat admission within 6 months 4
• Higher readmission rates occurred in females, ages 11-15, less deprived areas, and eating disorders 4

Clinical Implications and System Pressures

High-Risk Populations

Frequent attenders represent a concentrated burden:

• 45% had psychiatric disorder and 49% had alcohol-related disorders among those attending ED ≥7 times yearly 5
• These patients had 8.2-fold higher odds of psychiatric disorder (OR=8.2,95% CI=3.8-18.1) compared to routine attenders 5

Referral Source Variations

Different pathways show distinct patterns 6:

• Community mental health team patients: highest psychosis rates, most likely to require admission
• General practitioner referrals: fewer social problems, more likely deemed "inappropriate" by ED clinicians
• Self-presenters from broader community: more likely male, with self-harm, substance misuse, and behavioral problems

Critical Gaps and Future Trajectory

The evidence suggests accumulating unmet need that will likely manifest as increased emergency presentations:

• Early pandemic reductions reflected access barriers, not improved mental health 2
• Depression remained elevated 12 months into pandemic, suggesting persistent burden 2
• Children and adolescents show accelerating trends requiring urgent system response 4, 3
• Out-of-hours presentations (68.0%) highlight need for enhanced community and hospital capacity outside standard hours 1