Black skin lesions may be melanocytic, including nevi and melanoma. Black eschars are collections of dead skin that can arise from infarction, which may be caused by infection (eg, anthrax, angioinvasive fungi including Rhizopus, meningococcemia), calciphylaxis, arterial insufficiency, or vasculitis.
20 rows · Drug Eruptions and Reactions and Dermatologic Disorders - Learn about from the Merck …
Petechia is actually a spot on your skin that may be red to purple in color. Petechiae is the plural form when there are groups of spots appearing on the skin. These are results of minor hemorrhage. They may appear like a rash and usually emerge in clusters. These spots appear on the skin particularly of legs.
Drug eruptions are occasionally reported in dogs, cats, and horses and rarely in other domestic animals. Drugs responsible for skin eruptions may be administered orally, topically, or by injection or inhalation. Any drug may cause an eruption, and any one drug consistently produces no specific type of reaction.
Application of patch test in allergic (atopic) dogs and investigation of dog allergy incidence in people ... of determining contact allergens that may cause eczematous skin eruptions in dogs ...
Fixed drug eruption. A large red-violet plaque on the arm of a child.
Erythema multiforme (EM) is a skin condition of unknown cause; it is a type of erythema possibly mediated by deposition of immune complexes (mostly IgM-bound complexes) in the superficial microvasculature of the skin and oral mucous membrane that usually follows an infection or drug exposure. It is an uncommon disorder, with peak incidence in the second and third decades of life.
12/17/2014 · Purpuric Lesions With Petechiae A 49-year-old man with leukemia developed these skin lesions after his diagnosis. These purpuric lesions with petechiae are secondary to thrombocytopenia and can be caused by the disease or chemotherapy. In this patient, the lesions were secondary to chemotherapy for leukemia.
Porphyria cutanea tarda is the most common subtype of porphyria. The disease is named because it is a porphyria that often presents with skin manifestations later in life. The disorder results from low levels of the enzyme responsible for the fifth step in heme production. Heme is …
Diagnosis and management of cutaneous drug reactions in dogs and cats (Proceedings) Observed reaction does not resemble pharmacologic action. Oct 01, 2011. By Edmund J. Rosser, Jr., DVM, DACVD. ... Diagnosis of cutaneous drug reactions. History.
Most common superficial inflammatory dermatoses involve the first compartment/unit of the skin. The most common pattern of reaction encountered is the superficial perivascular inflammatory infiltrate. A transient inflammatory stimulus results in slight hyperaemia and a mild perivascular lymphocytic infiltrate.
2/21/2019 · Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. Data sources include IBM Watson Micromedex (updated 1 July 2019), Cerner Multum™ (updated 1 July 2019), Wolters Kluwer ...
Some B-cell lymphomas found on the skin may come from within the body but involve the skin. Therefore it is important when a skin biopsy shows a B-cell lymphoma that further tests are carried out to make sure other areas of the body are not involved and that the disease has originated in the skin.
home / skin center / skin a-z list / image collection a-z list / fixed drug eruption picture article Papules, Scales, Plaques and Eruptions. Picture of Fixed Drug Eruption. Fixed drug eruption. A large red-violet plaque on the arm of a child.
What is petechiae? Petechiae are small colored spots that show up on varying places on your body including on your arms, legs, stomach, and buttocks. We'll explain the causes of petechiae, and how ...
Introduction. This topic provides a differential diagnosis for urticaria and for urticaria-like conditions that resemble urticaria but are not caused by wealing.. What is urticaria? Urticaria describes a group of conditions in which there are weals (or weals) in the skin, itchy white or red lumps.