microcephaly
Let an agent explain microcephaly and its causes in general terms from clinical sources, describe diagnosis, outcomes and support, relay public health aspects such as the Zika epidemic with attribution, and route families to clinicians and support organisations.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain microcephaly and its causes in general terms from clinical sources, describe diagnosis, outcomes and support, relay public health aspects such as the Zika epidemic with attribution, and route families to clinicians and support organisations.
A condition in which the head and brain are much smaller than expected for age and sex, present at birth or developing in infancy, caused by genetic disorders such as autosomal recessive primary microcephaly and syndromes in which microcephaly is a major feature, or by prenatal factors including infections such as Zika virus and rubella, alcohol, malnutrition and injury, and often associated with developmental delay, seizures and conditions such as spastic diplegia; severity and outcomes vary widely, and care is supportive and multidisciplinary.
What it is for: Not applicable; a condition.
It can be explain the condition and causes; relay diagnosis and outcomes; relay public health aspects; route families.
Distinguishing features
Reduced brain growth
Genetic and acquired causes
Variable outcomes
Supportive care
What it looks like
Not a visible object; a head circumference well below the expected range.
Physical character
definition threshold: head circumference below -2 or -3 SD measure - for age and sex
Zika-associated cases in Brazil: thousands count - 2015-2016 epidemic
How it is recognised
Abnormally small head and brain
Primary genetic microcephaly, syndromic forms, acquired microcephaly from infection or injury
Craniosynostosis alters head shape from suture fusion; small stature alone is not microcephaly
Related models
is a kind of - in registry terms
is caused by - among other prenatal factors
is measured by - against growth charts
is associated with - in many cases
In practice
Families and kinds
autosomal recessive primary microcephaly
syndromic microcephaly, including named syndromes such as Lambotte, Halal and Stimmler syndromes
microcephaly with spastic diplegia
congenital infection-related microcephaly such as Zika and rubella
acquired postnatal microcephaly
Identifiers
ICD-11 LD20.0 microcephaly
MeSH D008831 microcephaly
Orphanet ORPHA:2512 autosomal recessive primary microcephaly
Standards and regulation
WHO and CDC guidance on microcephaly surveillance and Zika
Clinical guidelines on developmental assessment
Rare disease frameworks
Failure modes and hazards
Agents giving personal medical advice
Stigma and misinformation
Overgeneralising outcomes
Confusing with craniosynostosis
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What microcephaly is.
Clinical.
Definition
Definition.
Definition
Definition.
- What is microcephaly, and how is it defined and measured? definition
- Is the question about microcephaly, craniosynostosis or another growth condition? boundary
Causes
Causes.
Causes
Causes.
- What genetic, infectious and environmental causes exist, including named syndromes and Zika virus? provenance
- Which entry fits the specific cause? action
Care Diagnosis and care.
Clinical.
Diagnosis
Diagnosis.
Diagnosis
Diagnosis.
- How is microcephaly diagnosed before and after birth, in general terms? provenance
- Is the user asking about their own child or pregnancy, which needs their clinicians? boundary
Support
Outcomes and support.
Support
Support.
- What outcomes are seen, and what therapies and support help, per guidelines? provenance
- Which references are standard? provenance
Public health Public health.
Attribution.
Zika
Zika epidemic.
Zika
Zika.
- How did the Zika epidemic reveal the link to microcephaly, as reported by WHO and researchers? provenance
- Which sources are cited? provenance
Prevention
Prevention.
Prevention
Prevention.
- What prevention advice exists on infections, alcohol and nutrition in pregnancy? provenance
- Which entry fits prenatal care? action
Context Research and community.
Context.
Research
Research.
Research
Research.
- What research on microcephaly genes and brain development exists, with findings attributed? provenance
- Which entry fits neurodevelopment research? action
Community
Families and organisations.
Community
Community.
- What organisations support families affected by microcephaly? provenance
- Which entry fits the specific organisation? action
What the second pass must settle
- Should primary microcephaly and Zika-associated microcephaly be separate entries?
- How should clinical and public health guidance be linked?
- The registry entry has merged aliases naming rare syndromes; should they be split off?