An 8-year-old boy has bilateral corneal scarring from interstitial keratitis, peg-shaped notched upper central incisors, and sensorineural deafness. His mother was untreated for syphilis during pregnancy. This classic combination is known as:

• A Beck triad
• B Graves triad
• C Hutchinson triad ✓
• D Charcot triad

Explanation

Late congenital syphilis produces the Hutchinson triad of interstitial keratitis, Hutchinson teeth (peg-shaped, notched central incisors due to defective enamel of permanent dentition), and eighth cranial nerve deafness. Other stigmata include saddle nose, sabre tibia, Clutton joints, and mulberry molars. Graves triad relates to thyrotoxicosis, Beck triad to cardiac tamponade, and Charcot triad to ascending cholangitis, none of which relate to congenital treponemal infection.

Reference: Nelson Textbook of Pediatrics, 21st ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.