Rare diseases · Sign or symptom
Aplasia cutis congenita over the scalp vertex
HP:0004471
What it means
A developmental defect resulting in the congenital absence of skin on the scalp vertex, often just lateral to the midline.
Rare diseases that can present with this2
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: Absent cutis congenita of vertex · Aplasia cutis congenita of vertex
Tracking symptoms like this for someone? Eleplan keeps symptoms, diagnoses, medications and every specialist in one plan.
Start free with EleplanThis 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.