palmoplantar ectodermal dysplasia palmoplantar ectodermal dysplasia palmoplantar ectodermal dysplasia is a cutaneous condition. palmoplantar ectodermal dysplasiaspecialtydermatology types include: palmoplantar ectodermal dysplasia type 1 or pachyonychia congenita type i palmoplantar ectodermal dysplasia type 3 or acrokeratoelastoidosis palmoplantar ectodermal dysplasia type 4 or papillon–lefèvre syndrome palmoplantar ectodermal dysplasia type 5 or tyrosinemia type ii palmoplantar ectodermal dysplasia type 6 or olmsted syndrome palmoplantar ectodermal dysplasia type 8 or meleda disease