RIDDLE syndrome

noun

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.

Meanings

nounRIDDLE syndrome (uncountable)
  1. uncountablemedicineA 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.

Origin

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

Full word history & related roots →
Cite this entry
APA

RIDDLE syndrome. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/RIDDLE%20syndrome

MLA

“RIDDLE syndrome.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/RIDDLE%20syndrome. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “RIDDLE syndrome,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/RIDDLE%20syndrome.

Source: RIDDLE syndrome on Wiktionary, CC BY-SA 4.0.