Focal acral hyperkeratosis (also known as "Acrokeratoelastoidosis lichenoides," and "Degenerative collagenous plaques of the hand") is a late-onset keratoderma

Keratoderma

-Congenital:* Simple keratodermas** Diffuse palmoplantar keratodermas*** Diffuse epidermolytic palmoplantar keratoderma*** Diffuse nonepidermolytic palmoplantar keratoderma*** mal de Meleda** Focal palmoplantar keratoderma*** Striate palmoplantar keratoderma...

, inherited as an autosomal dominant condition, characterized by oval or polygonal crateriform papule

Papule

A papule is a circumscribed, solid elevation of skin with no visible fluid, varying in size from a pinhead to 1 cm.With regard to the quote "...varying in size from a pinhead to 1cm," depending on which text is referenced, some authors state the cutoff between a papule and a plaque as 0.5cm,...

s developing along the border of the hands, feet, and wrists.

It is considered similar to Costa acrokeratoelastoidosis.

See also

• List of cutaneous conditions
• Palmoplantar keratoderma
  Palmoplantar keratoderma
  Palmoplantar keratodermas are a heterogeneous group of disorders characterized by abnormal thickening of the palms and soleAutosomal recessive and dominant, X-linked, and acquired forms have all been described.There are also acquired forms of the condition....
  
  
• Keratoderma
  Keratoderma
  -Congenital:* Simple keratodermas** Diffuse palmoplantar keratodermas*** Diffuse epidermolytic palmoplantar keratoderma*** Diffuse nonepidermolytic palmoplantar keratoderma*** mal de Meleda** Focal palmoplantar keratoderma*** Striate palmoplantar keratoderma...
  
  
• Skin lesion