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Journal Compilation © 2020 Acta Dermato-Venereologica. doi: 10.2340/00015555-3592 A 4-year-old German girl was referred for specialized hair consultation due to short fine, blond sparse hair that had never necessitated a hair-cut and varied in length (max. 7 cm) (Fig. 1a). Assessment of her deciduous teeth appeared within normal age limits. Hair root examination and trichogram from the occipital region showed telogen effluvium at the rate of 70% (Fig. 1b). Possible causative factors were ruled out via complete blood count. A repeated trichogram and root examination after one year resulted in a 49% positive result for telogenic (clubbed) hair roots. At 9-years of age, the patient presented for a follow-up visit with continued hair growth abnormalities. Conspicuously, only the central maxillary incisors had presented (Fig. 2a). The intraoral examination revealed complete primary dentition; the orthopantomogram (OPG) (Fig. 2b) indicated that only the permanent central maxillary incisors, first mandibular premolars and all second permanent molars were in the early developmental stages. Delayed dental development and oligodontia were the primary characteristics with this patient with twenty permanent teeth absent. Due to the presence of multiple tooth agenesis (TA) to her permanent dentition, we hypothesized a possible link between the TA and the hair anomalies and initiated a genetic work up.

Congenital Hair Anomaly in Association with Hypodontia of Permanent Teeth: A Quiz