asian girl pointed her finger at her elbow because dark patches on the skin and allergic rash known as acanthosis nigricans

acanthosis allergic allergy asian background bad because black body care child chronic closeup coloured cubit cuticle damage dark darkened dermatitis dermatologist dermatology disease disorder dry dryness eczema elbow female finger flaky girl health healthy her joint kid known little look medical medicine nigricans patches physical pointed problem rash rough scleroderma skin spot surface texture toggle touching treatment unhealthy velvet woman worry wrinkle young