# RIDDLE syndrome

> English word · Noun

## Definitions
1. A rare syndrome of which symptoms include facial dysmorphism, short stature, motor control and learning difficulties, ataxia, microcephaly, conjunctival telangiectasia, recurring sinus infections, late onset of pulmonary fibrosis, increased alphafetoproteins, and increased radiosensitivity.

## Etymology
Abbreviation of "radiosensitivity, immunodeficiency, dysmorphic features and learning difficulties", modeled after riddle.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/riddle-syndrome