Rare diseases · Sign or symptom

Congenital hypoplastic anemia

HP:0004810

What it means

A type of hypoplastic anemia with congenital onset.

In this condition, hematopoiesis must have been inadequate in fetal life. Affected infant have marked pallor and reticulocytopenia or absence of red blood cell precursors in an otherwise normally cellular bone marrow. This term does not refer to a particular diagnosis or etiology (or which several are known) but to the phenotypic feature.

Rare diseases that can present with this1

Very common80–99%

1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Congenital dyserythropoietic anaemia · Congenital dyserythropoietic anemia · Congenital hypoplastic anaemia

Congenital hypoplastic anemia

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.