Cutis verticis gyrata secondary to infiltrating ductal carcinoma breast.

Cutis verticis gyrata is a long lasting and progressive condition in which there is hypertrophy and folding of the scalp skin. It typically affects the vertex and occipital region; however, it may involve the entire scalp. Classically, it has been divided into primary and secondary forms. Primary has been sub-divided into primary essential and non-essential. Secondary forms are commonly due to systemic diseases, inflammatory dermatoses, underlying nevoid abnormalities or trauma. The association between cutis verticis gyrata and malignancy is rare. It has been described in patients of leukemia, endocrine tumours and malignant melanoma. We present a case of cutis verticis gyrata in a patient of carcinoma breast.