Ackerman syndrome or interstitial granulomatous dermatitis is a familial syndrome of fused molar roots with a single canal (taurodontism), hypotrichosis, full upper lip without a cupid's bow, thickened and wide philtrum, and occasional juvenile glaucoma.

[1][2][3] It was described by James L. Ackerman, A. Leon Ackerman, and A. Bernard Ackerman.

[4]