Delayed CNS myelination

What it means

Delayed myelination in the central nervous system.

A delay in the process of myelination, which normally begins in the fifth fetal month and is about 90 percent complete at the age of two years. Myelination continues into early adulthood.

Rare diseases that can present with this9

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: Delay in central nervous system myelination