Dermatology - Melanoma In Situ  (MIS) When melanoma cells are restricted to the epidermis, above the basement membrane, MIS is largely employed as a histological definition. Hyperplasia, atypia, and spread of basilar melanocytic atypia can occur in single

Dermatology - Pyoderma Gangrenosum  Acute or chronic pyoderma gangrenosum is an idiopathic skin disease that is quite debilitating. Though it can also happen on its own, it frequently coexists with a systemic illness, including arthritis, inflammatory bow

Dermatology -  Lymphangioma A microcystic lesion known as a lymphphangioma, or lymphatic malformation, can develop throughout infancy or childhood or be present from birth. Rarely, it could vanish on its own. There could be a bacterial infection. Lymph

Dermatology -  Genital Herpes Simplex Virus Infection A persistent sexually transmitted virus condition called genital herpes is characterized by both symptomatic and silent viral shedding. This is a chronic infection that becomes worse with aging and co

Dermatology - Angioedema and Urticaria Both urticaria and angioedema are edematous conditions that affect the cutaneous vasculature at the papillary and deep levels. Papillary wheals make up urticaria, while greater edema involving the dermis and subcuta

Dermatology - Cherry Angiomas  Cherry angiomas are extremely prevalent, and you can be sure that practically every old person has at least one of them. Cherry angiomas are vascular lesions that are dome-shaped and can range from bright red to violaceous o

Dermatology - Phytophotodermis Phytophotodermatitis is an inflammation of the skin that can be brought on by coming into touch with specific plants while being exposed to sunshine for either recreational or occupational purposes (plant + light = dermati

Dermatology - Bullous pemphigoid  Bullous pemphigoid is an autoimmune disease that mostly affects older people. When the disease first starts, it usually looks like a prodromal eruption with itchy, papular sores. After a few weeks or months, it changes

Generalized Fixed Drug Eruption  An adverse skin response to a drug that you've eaten or drank is called a fixed drug eruption (FDE). It looks like a single (or sometimes multiple) red patch or plaque. If the patient is given the same drug again, the ras

Dermatology - Disease of Tuberculosis Tuberous sclerosis is an autosomal dominant disease that shows up as sores on the skin and hamartomas in the brain, heart, kidneys, eyes, and other body parts. Seizures, mental retardation, and birthmarks called "w