Acquired reactive perforating collagenosis, a rare entity at uncommon site.

Acquired reactive perforating collagenosis (ARPC), rare disorder characterized by transepidermal elimination (TEE) of collagen fibers, is seen in adult diabetics. Genetic predisposition, familial aggregation, trauma, bites and scratching are implicated. Diabetics develop microvascular diseases leading to intense pruritus causing repeated micro trauma leading to necrosis of connective tissue of dermis, causing TEE.

Patch Testing as a Corroborative and Diagnostic Tool in Patients Suspected of Contact Allergen Induced Facial Melanosis.

Background: Hypermelanosis involving predominantly the face and neck is relatively common and often presents a complex diagnostic problem.

Objective: To study the patterns of facial melanosis in Indian skin and assess the importance of patch testing as a corroborative tool in the diagnosis of facial melanosis.

Subjects And Methods: A total of 50 patients who consented to the study and satisfied the inclusion and exclusion criteria were incorporated in the study.

The story of a deformed leprous foot.

Eccrine syringofibroadenoma (ESFA) is a rare adnexal tumour of eccrine ductal proliferation. A 50 year old treated case of leprosy presented with a chronic non healing ulcer of 5 years duration on the deformity laden right foot. Multiple verrucous papules and plaques were seen surrounding the ulcer which showed histopathological findings consistent with ESFA.

Multiple Cutaneous Reticulohistiocytoma.

Multicentric reticulohistiocytosis is a rare non-Langerhans cell histiocytosis characterized in its full form by severe destructive arthritis, cutaneous nodules, and systemic manifestations. Cutaneous lesions may precede, accompany, or more commonly develop later than other features in this disease. We describe a case of multiple cutaneous reticulohistiocytoma without any systemic associations after thorough investigations.