Hutchinson's triad

Hutchinson's triad describes the classic congenital syphilis symptoms. They occur after maternal infection in the second trimester of pregnancy by transplacental transmission (in utero, vertical transmission). It manifests in the child during school years and may not appear until adolescence (this form of congenital syphilis is called syphilis congenita tarda, lues connata tarda).

The triad:
 * Blindness (keratitis parenchymatosa/keratitis profunda, corneal opacity)
 * Deafness (hearing loss caused by inner ear injury - vestibular deafness)
 * Barrel-shaped teeth (barrel-shaped incisors - the upper incisors narrow to a sharp edge, which is crescent-shaped): Hutchinson's teeth

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