Papillomatosis is signified by a wave like epidermis.The most common causes are warts,seborrhoeic keratoses,solar keratoses and skin tags.
S-Squamous Darier's disease,Epidermal nevus,Acrokeratosis verruciformis,
I-Infective Tuberculosis verrucosa cutis,Orf ,Milker's nodule
G-Granulomatous
N-Neoplastic Some SCCs and melanocytic nevi,Nevus sebaceous,Syringocystadenoma papilliferum
D-Drugs
I-Immunological
P-Physical
M-Metabolic Lipoid proteinosis,Acanthosis nigricans
E-Endocrine
N-Nutritional
Others