Skin tbl

lolernie's version from 2016-01-21 04:23


Question Answer
maculeflat, distinct, discolored area of skin that is usually less than 1 centimeter wide
papulea small, raised, solid pimple or swelling, often forming part of a rash on the skin and typically inflamed but not producing pus.
petechiae a small red or purple spot caused by bleeding into the skin. - Macular purpura small lesions
purpuraa rash of purple spots on the skin caused by internal bleeding from small blood vessels. - Usually scurvy or vitamin C defic. may be palpable or non-palpable (flat/macular)
Molluscum ContagiosumSee pinkish, papular skin lesions with an umbilicated center. Lesions usually on the face, especially around the eyes.
Molluscum Contagiosum mnemonicPOX in a box DNA w/ its own envelope, snail mail shell
ParvovirusSSDNA virus! Smallest & nonenveloped. - Slapped cheek/erythoma/fifth disease
Parvovirus transmissionTransmission—Respiratory droplets and transplacental.
Parvovirus pathogenesisPathogenesis—Virus preferentially infects & kills erythroblasts, causing aplastic anemia in patients with hereditary anemias; immune complexes cause rash and arthritis.
Measles Rash causeThe rash is caused primarily by cytotoxic T cells attacking the measles virus–infected vascular endothelial cells in the skin
Koplik’s spots are bright red lesions with a white, central dot that are located on the buccal mucosa and are virtually diagnostic. Measles virus
a maculopapular rash appears on the face and proceeds gradually down the body to the lower extremities, including the palms and solesMeasles virus
(chickenpox) name? recurrent form?Varicella (chickenpox) is the primary disease; zoster (shingles) is the recurrent form.
Describe varicella infxnAfter an incubation period of 14 to 21 days, brief prodromal symptoms of fever and malaise occur. A papulovesicular rash then appears in crops on the trunk and spreads to the head and extremities (Figure 37–5). The rash evolves from papules to vesicles, pustules, and, finally, crusts. Itching (pruritus) is a prominent symptom, especially when vesicles are present.
describe zoster infxnpainful vesicles along the course of a sensory nerve of the head or trunk - pain can last for weeks
Rubella virus family and descriptionRubella virus is a member of the togavirus family. It is composed of one piece of single-stranded RNA, an icosahedral nucleocapsid, and a lipoprotein envelope.
Dermatophytoses are caused by fungi (dermatophytes) that infect... only superficial keratinized structures (skin, hair, and nails), not deeper tissues.
athlete’s foot and jock itchDermatophytoses - chronic infections often located in the warm, humid areas of the body
Trichophyton tonsurans is the most common cause of outbreaks of tinea capitis (SCALP RINGWORM) in children and is the main cause of endothrix (inside the hair) infections. Its a Dermatophytoses
Malassezia furfurTinea versicolor hypopigmented areas, especially on tanned skin in the summer. There may be slight scaling or itching, but usually the infection is asymptomatic
Cladosporium werneckii,Tinea Nigra a brownish spot caused by the melanin-like pigment in the hyphae. - Injury in soil
Sporothrix schenckii - what is it- where live dimorphic fungus mold form lives on plants, and the yeast form occurs in human tissue.
Sporothrix schenckii diagnosisn gardeners, especially those who prune roses - local pustule or ulcer with nodules along the draining lymphatics - HIV can allow dissemination
CAndida skin visibilitySkin invasion occurs in warm, moist areas, which become red and weeping. Fingers and nails become involved when repeatedly immersed in water; persons employed as dishwashers in restaurants are commonly affected. Thickening or loss of the nail can occur. Diaper rash in infants occurs when wet diapers are not changed promptly
Conditions in which macules appearSmall pox, Purpura