Category: Diagnostic Reference Sheets
General Information Pityriasis Lichenoides Et Varioliformis Acuta, also known as Mucha Habermann’s Disease, or PLEVA for short is a rare skin disorder characterized by an abrupt onset of red, round papules, purpura and blister like lesions. PLEVA most commonly affects the areas of the trunk, buttocks, and proximal extremities with eruptions occurring in successive crops. […]
General Information Pityriasis alba (PA) is a common skin disorder affecting children between the ages of 6-12. Dry round scaly patches appear most often on the face, but can also involve the upper arms, neck or shoulders. The duration can vary between a couple of months to a couple of years, the lesions eventually subside […]
General Information Parapsoriasis is a group of diseases that can be subdivided in two general forms: Small Plaque and Large Plaque. Small plaque parapsoriasis is a benign disorder that rarely progresses. The plaques appear on patients as small circular lesions with some slight scaling in a light pinkish coloring. Small plaque lesions measure less than […]
General Information Panniculitis is an inflammation within adipose tissue. Clinically, individuals present with tender nodular lesions typically on the calves or shins that feel thickened and woody. A microscopic evaluation divides panniculitis into four subtypes. Lobular with vasculitis e.g. Erythema nodosum leprosum (leprosy), Lucio’s phenomenon; Lobular panniculitis without vasculitis e.g. Scelerosing panniculitis (lipodermatosclerosis), Calciphylaxis; Septal […]
General Information As depicted in Jane Austen’s Pride and Prejudice reality may not be reflected in an initial impression or appearance. So to, cutaneous Paget’s disease maybe an important harbinger of an underlying visceral malignancy. The most important forms of Paget’s disease entail a genital or extra-mammary form imbued a tenuous association with underlying genitourinary […]
General Information Onychomycosis is a fungal infection that affects the toenails or the fingernails. Onychomycosis is characterized into different subtypes. The subtypes include Distal Subungual Onychomycosis, White Superficial Onychomycosis, Proximal Subungual Onychomycosis, Endonyx Onychomycosis, Candidal Onychomycosis and Total Dystrophic Onychomycosis. The most common form is Distal Subungual OM; the fungus spreads from the plantar skin […]
General Information Non-Hodgkin Lymphoma is a cancer of the lymphatic system (part of the immune system). The lymphatic system includes lymph vessels, lymph, lymph nodes, tonsils, thymus and the spleen. Lymphatic tissue is also found in the stomach, skin and small intestines. Lymphocytes consist of NK cells – Defends the host from tumors and virally […]
General Information Neurofibroma is a type of benign nerve sheath tumor, a class of tumor of the nervous system, which is comprised of myelin surrounding nerves. Neurofibromas may affect any nerve in the body but frequently grow on spinal nerve roots. The papules can appear as single lesions or multiple lesions. When presented with multiple […]
General Information Necrobiosis Lipoidica Diabeticorum is a degenerating disease of the connective tissue of the skin particularly of the lower extremities. Plaques begin to develop with a red-brown color but progress to a yellow and atrophic appearance. The plaques slowly grow over a period of months to years, some pruritus and pain may occur. The […]
General Information Mycosis Fungoides is a form of malignancy characterized by red scaly patches that develop into raised plaques, some patients will have pruritus. The plaques eventually turn into mushroom-shaped tumors. Mycosis Fungoides is the most common type of Cutaneous T-cell Lymphoma (CTCL), originating from a type of white blood cell called a T lymphocyte […]