<unk>  is a disorder of keratisation of the skin that manifests as a perfectly circular, scaly patches on the torso and proximal portions of the extremities. It may be associated with diseases like hepatocellular carcinoma in racially predisposed groups.
Pityriasis rotunda
Pityriasis rubra pilaris
Pityriasis amiantacea
Phytophotodermatitis
Pityriasis rosea
Impetigo herpetiformis
Streptococcal intertrigo
Dermatitis repens