Riga–Fede disease

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Riga–Fede disease
Riga-Fede disease on the lower lip.

Riga–Fede disease (or syndrome) is a rare condition in infants characterized by ulceration on the ventral surface of the tongue or on the inner surface of the lower lip. It is caused by trauma to the soft tissue from erupted baby teeth.[1]

It can be described as a sublingual traumatic ulceration. Although it begins as an ulceration, it may progress to a large fibrous mass with repeated trauma.[2]

Ulcer on surface of tongue and natal teeth


  1. "Who Named It: Riga-Fede disease". Archived from the original on 2018-02-15. Retrieved 2020-04-12.
  2. Hegde, RJ (March 2005). "Sublingual traumatic ulceration due to neonatal teeth (Riga-Fede disease)". Journal of Indian Society of Pedodontics and Preventive Dentistry. 23 (1): 51–2. doi:10.4103/0970-4388.16031. PMID 15858311.

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