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Congenital triangular alopecia: a case report and review.
Kathleen B Elmer1, Rita M George
1Wilford Hall and Brooke Army Medical Centers, San Antonio, Texas, USA. kelmer@satx.rr.com
Cutis
|June 26, 2002
Summary
Congenital triangular alopecia, a nonscarring hair loss, is often acquired after age two. Renaming it triangular alopecia clarifies its nature and avoids unnecessary treatments.
Area of Science:
- Dermatology and Trichology
- Pediatric Dermatology
Background:
- Congenital triangular alopecia (CTA) is characterized by nonscarring hair loss in the temporal scalp.
- The affected area is typically triangular or lancet-shaped.
Observation:
- While historically considered congenital, CTA is often noticed after two years of age.
- Recent observations suggest an acquired etiology rather than a congenital one.
- The condition presents with normal skin, lacking inflammation.
Findings:
- The study proposes renaming the condition to 'triangular alopecia' to reflect its acquired nature.
- Triangular alopecia does not respond to treatments like topical or intralesional steroids due to the absence of inflammation.
- Accurate diagnosis is crucial to prevent ineffective and potentially harmful interventions.
Implications:
- Correctly diagnosing triangular alopecia prevents unnecessary medical interventions.
- Understanding the acquired nature of this condition guides appropriate patient management.
- This renaming clarifies the condition for both clinicians and patients, improving diagnostic accuracy.