The adverse effects of COVID-19 and the associated restrictions on eating disorder populations have been discussed in recent literature. However, little is known about the presentation of cases with avoidant/restrictive food intake disorder (ARFID) during this period.

To explore the extent of the literature on the presentation of ARFID, and ARFID-like cases, during the COVID-19 pandemic.

Cochrane Library, CINAHL (EBSCO), PsycINFO (EBSCO), EMBASE (Ovid) and Medline (Ovid) were searched for publications between March 2020 and May 2023. Google Scholar and reference lists were hand searched. At least two reviewers independently screened each paper. Narrative synthesis was used.

Seven papers were included: four case reports and three cohort studies (total ARFID sample of 46). Included papers were assessed as having high (n = 3) or moderate (n = 4) quality. Findings did not suggest an increase in ARFID cases during the COVID-19 pandemic, although it is unclear if this is because of a lack of impact or underrecognition of ARFID. A need for a multidisciplinary approach to differentiate between ARFID and organic causes of ARFID-like presentations (e.g. gastrointestinal effects of COVID-19) was highlighted.

Publications specifically pertaining to ARFID presentations during the COVID-19 pandemic have been few. Papers found have been of small sample sizes and lack subanalyses for ARFID within broader eating disorder samples. Continued surveillance is needed to evaluate any COVID-19-specific effects on the development, identification, treatment and outcomes of ARFID.

Delirium may be more prevalent in elderly outpatients than has long been assumed. However, it may be easily missed due to overlap with dementia. Our aim was to study delirium symptoms and underlying somatic disorders in psycho-geriatric outpatients.

We performed a case-control study among outpatients that were referred to a psychiatric institution between January 1st and July 1st 2010 for cognitive evaluation. We compared 44 cases with DSM-IV delirium (24 with and 20 without dementia) to 44 controls with dementia only. All participants were aged 70 years or older. We extracted from the medical files (1) referral characteristics including demographics, medical history, medication use, and referral reasons, (2) delirium symptoms, scored with the Delirium Rating Scale-Revised-98, and (3) underlying disorders categorized as: drugs/intoxication, infection, metabolic/endocrine disturbances, cardiovascular disorders, central nervous system disorders, and other health problems.

At referral, delirium patients had significantly higher numbers of chronic diseases and medications, and more often a history of delirium and a recent hospital admission than controls. Most study participants, including those with delirium, were referred for evaluation of (suspected) dementia. The symptoms that occurred more frequently in cases were: sleep disturbances, perceptual abnormalities, delusions, affect lability, agitation, attention deficits, acute onset, and fluctuations. Drug related (68%), infectious (61%), and metabolic-endocrine (50%) disturbances were often involved.

Detection of delirium and distinction from dementia in older outpatients was feasible but required detailed caregiver information about the presence, onset, and course of symptoms. Most underlying disorders could be managed at home.