Twenty Nail Dystrophy with Pterygium Unguis

Area of Science:

• Dermatology
• Nail Diseases

Background:

• Twenty nail dystrophy (TND) is a rare condition affecting all fingernails and toenails.
• It typically presents in childhood, characterized by longitudinal ridging and splitting.

Observation:

• A 15-year-old female developed TND at age 7, with pterygium formation.
• No other ectodermal abnormalities, such as skin, hair, or mucous membrane issues, were noted.

Findings:

• The case suggests a possible link between lichen planus and isolated TND.
• The absence of systemic or other ectodermal involvement is a key feature.

Implications:

• This case highlights lichen planus as a potential etiology for TND.
• Further research may clarify the pathogenesis of TND and its association with inflammatory conditions.