Aplasia of the olfactory bulb

What it means

Lack of formation (congenital absence) of the olfactory bulb.

Olfactory bulb aplasia causes anosmia, a complete loss of the sense of smell.

Rare diseases that can present with this1

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: Aplastic olfactory bulb · Olfactory bulb aplasia