acanthosis nigricans
Pronunciation: ak-an-THOH-sis NY-grih-kans
Hyperpigmented, velvety skin patches often associated with insulin resistance and metabolic syndrome in adolescents.
Full Definition
Acanthosis nigricans is a dermatological condition characterized by dark, velvety hyperpigmentation typically affecting skin folds such as the neck, axillae, and groin. In adolescent medicine, acanthosis nigricans is particularly significant as it often indicates underlying insulin resistance and increased risk for type 2 diabetes mellitus. The condition is more commonly observed in adolescents with obesity and those from certain ethnic backgrounds. Recognition of acanthosis nigricans should prompt screening for metabolic disorders and lifestyle counseling.
Usage
Usage note: Educate families that this is not due to poor hygiene; avoid stigmatizing language in documentation.
In Context
- "Physical examination revealed acanthosis nigricans on the neck, prompting hemoglobin A1c testing for diabetes screening." — Primary care documentation
- "Patient education addressed that acanthosis nigricans is not poor hygiene but rather a sign of insulin resistance." — Patient counseling note