Becker's nevus is a relatively common acquired focal epidermal melanotic hypermelanosis usually found in the region of the shoulder girdle of young men. Various skeletal malformations and cutaneous dermatoses have been reported in Becker's nevus. Osteoma cutis is a rare disorder characterized by compact bone formation in the dermis or subcutaneous tissue. Secondary ossification on nevi has been...

Eight cases of the acanthosis nigricans form of epidermal nevus have been described in literature. The present case is impressive and has an extensive segmental distribution. Although etiological factors, such as mutations in the FGFR3 gene, are becoming recognized, treatment options remain limited. We present a case of a 14-year-old male with multiple hyperpigmented, hyperkeratotic plaques on ...

Becker nevus syndrome is a phenotype characterized by the fundamental presence of Becker's nevus with ipsilateral hypoplasia of the breast or other skin, skeletal and/or muscular disorders. This syndrome generally originates at birth, intensifies significantly in adolescence and is one of the syndromes that constitute epidermal nevus syndrome. To the best of our knowledge, this is the first cas...

Epidermal nevi are hamartomas that are characterized by hyperplasia of the epidermis and adnexal structures, and may be associated with serious disfiguration. Germline mutations in the FGFR3 gene have found to be the etiology of epidermal nevus. Patients often seek treatment from dermatologic surgeons but even an alert dentist can help to diagnose the lesion from its clinical appearance. Variou...

Verrucous hemangioma (VH) is an uncommon, congenital, vascular anomaly that resembles angiokeratoma but it encompasses distinctive clinicopathological features. The differential diagnosis of this entity included all the hyperkeratotic vascular tumors and malformations and, especially in localized cases, pigmented lesions. VH lesions initially present at birth, and therefore, the diagnosis in th...

Becker melanosis is an acquired melanosis and hypertrichosis usually in a unilateral distribution, first described in 1948 by S. William Becker. It is characterized by peripubertal development, male preponderance, hypertrichosis, occasional development of acneform lesions within the patch, and rare association with accessory scrotum in the genital region. Androgens may play a significant role i...

Epidermal nevus syndrome (ENS) is a rare condition characterized by congenital epidermal nevi (EN) associated abnormalities of other organs including central nervous system (CNS), skeletal system, eyes, and oral cavity (1). ENS is divided into a group of distinct disorders, based on the associated epidermal nevus and genetic inheritance pattern. Organoid nevus could be seen in some ENS, includi...

Epidermal changes including hyperkeratosis and epidermal verrucous changes, papillomatosis, secondary infection, recurrent erysipelas and ulceration are complications of chronic lymphedema. Elephantiasis is a term used for these significant changes. Xanthoma may also develop in lymphedematous areas. Lymphangiosarcoma is a rare complication of chronic lymphedema. Nodular fibrosis is mentioned as...