Homelessness and housing instability — formative SAQs

SAQ 1 — The vital-sign screening principle and the five domains of harm (10 marks)

A four-year-old girl is brought to your clinic for a recurrent asthma exacerbation. Her mother has missed two recent appointments and the address on file is wrong. When you ask gently whether they have a stable place to live, her mother discloses they have been sleeping on a relative's lounge room floor for six weeks since an eviction. [1] [4]

a) Explain why housing instability is a paediatric health problem rather than a welfare referral, and state the principle that should guide screening. (3 marks) [4] [3]

b) Outline the five domains of clustered morbidity you would expect and screen for in this child. (4 marks) [3]

c) Discuss the role of the portable health summary and how you would protect continuity for this family. (3 marks) [10]

Model answer

Housing as a health problem and the screening principle (3). Housing instability is a paediatric health problem, not a welfare referral, because stable, safe, adequate housing is a determinant of child health — it predicts physical illness, developmental delay, mental-health difficulty and educational underachievement, and the harm is biologically embedded through toxic stress. Sandel and colleagues' renter-family study established that unstable housing is an independent health determinant, adding harm above and beyond poverty. The screening principle is that housing is a vital sign: ask about it at every encounter, not only when a family presents in crisis, because the visible tip of overt homelessness is smaller than the hidden iceberg of insecurity, and families rarely volunteer the information. Lebrun-Harris' data show that routine screening in clinical settings identifies instability that would otherwise be missed. [4] [3] [1]

The five domains of clustered morbidity (4). Expect overlap, not a single problem. First, physical health — recurrent respiratory infections, asthma exacerbations (mould, damp, overcrowding), skin infections and chronic-disease disruption. Second, growth and nutrition — food insecurity drives faltering growth, iron deficiency and poor dietary quality, worst in the youngest. Third, development and education — developmental delay, speech and language difficulty, school absenteeism and lower attainment accumulate over years. Fourth, mental health and behaviour — anxiety, depression, externalising behaviour and sleep disturbance, which Keen's prospective data show can track into adulthood. Fifth, access and continuity — lost GP, lost specialist referrals, lost prescriptions, insurance gaps and fractured vaccination records, as Carroll's data documented. Screen broadly across all five; do not stop at the presenting complaint of asthma. [3] [7] [10]

The portable health summary (3). The portable summary is the single intervention that protects continuity across the chaos of housing instability. It should contain the child's diagnoses, medications, allergies, vaccination record, growth charts, specialist referrals, and the current care plan, in a form that travels with the family. Carroll's study showed that housing instability is associated with health-insurance gaps and administrative fracture that destroy continuity — addresses change, coverage lapses, and the friction of reinstating care is often insurmountable for a family in crisis. For this family, build the summary now, provide copies to the mother, confirm the GP and asthma-plan continuity, and ensure the prescription for preventer therapy is portable and bridgeable through the move. [10]

SAQ 2 — The toxic-stress mechanism, the housing intervention evidence and advocacy (10 marks)

A 17-year-old young man transitioning from out-of-home care presents with anxiety and a recent episode of self-harm. He discloses he has no stable address and has been couch-surfing since leaving his care placement two months ago. [7] [13]

a) Explain the toxic-stress mechanism by which housing instability becomes biological harm, citing the prospective evidence. (3 marks) [7]

b) Discuss the evidence that housing intervention improves child and family health, and how it informs your management. (4 marks) [13]

c) Outline the paediatrician's advocacy role for a young person in this situation, including safeguarding and continuity. (3 marks) [15] [10]

Model answer

The toxic-stress mechanism (3). Housing instability generates chronic, unpredictable stress — overcrowding, cold, noise, frequent moves, food insecurity and the constant threat of eviction — which repeatedly activates the stress response without the buffering of a predictable, safe environment. The parent is stressed, and a stressed parent is less able to co-regulate the child, eroding the caregiver buffer that is the single most powerful protective factor. Keen and colleagues' prospective study in JAMA Pediatrics found that childhood housing insecurity predicts anxiety and depression symptoms not only in childhood but into adulthood — the harm is durable and tracks across the life course. Their 2024 Brain, Behavior, and Immunity study showed that adolescent housing insecurity predicts elevated inflammation over time, a measurable biological signature consistent with HPA-axis dysregulation. For this young man, the anxiety and self-harm are the clinical expression of a toxic-stress load driven by the housing instability and the loss of the care placement's scaffolding. [7]

The housing intervention evidence (4). Bovell-Ammon and colleagues' pilot randomised trial in Health Affairs showed that a housing intervention for medically complex families was associated with improved family health — the first-line evidence that housing is a clinical intervention with measurable health return. The implication for management is that advocating for stable, safe housing is not work beyond the scope of medicine; it is the upstream treatment. For this young man, the management plan must include active linkage to housing services, support for a priority-housing application with a medical letter documenting the health case, and coordination with the leaving-care and youth-housing services. Treat the acute mental-health crisis to community standard — risk assessment, safety planning, urgent mental-health involvement — but recognise that the crisis will recur if the housing instability persists. The evidence frame is that housing intervention improves health, and the paediatrician's advocacy is part of the treatment. [13]

Advocacy, safeguarding and continuity (3). The paediatrician advocates at two levels. For the individual, advocacy means ensuring the young man's mental-health and housing needs are met, building a portable summary that survives his mobility, confirming a named GP and mental-health clinician, and supporting his housing application with medical evidence. For the population, it means advocating for transition planning before exit from care, pre-exit housing linkage, and youth-housing services that address the structural driver. Safeguarding applies: a young person with self-harm and no stable address is a high-risk situation, and the child-protection and youth-support pathways must be engaged. Coughlin's framing of homelessness, children and crisis reminds us that the withdrawal of protective scaffolding — here, the care placement — deepens the harm, and the advocacy role is to rebuild it. [15] [10]