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Dermatology

Pityriasis Rosea

Pityriasis rosea is an acute, self-limited eruption of oval, scaly papules and plaques with a distinctive morphology. Females are affected more often than males, and it most common in teenagers and young adults. Pityriasis rosea peaks in the spring and fall seasons....

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Wound Closure

The three types of wound healing: 1. Primary intention - the wound closed immediately in some manner (e.g. suture, Steri-Strips, staples, glue) 2. Secondary intention - the wound is left open and allowed to heal by granulation, epithelialization, and contraction. 3....

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CREST Syndrome

CREST syndrome (limited cutaneous systemic sclerosis): Calcinosis: calcium deposits in the skin and tissues. Raynaud’s phenomenon: an exaggerated vascular response to cold temperature or emotional stress which may manifest as white-blue-red transitions in skin color....

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Chickenpox vs. Shingles

The varicella-zoster virus causes varicella (chickenpox) and shingles (herpes zoster). It is very contagious. Chickenpox is usually a childhood infection that begins with a prodrome of fever, headache, and malaise followed by a generalized vesicular rash. It is...

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Scabies

Scabies is an infestation of the skin by the Sarcoptes scabiei mite. It causes generalized intractable pruritus with a characteristic distribution pattern. Risk factors include immunosuppression and crowded living conditions. Scabies is easily transmitted through skin...

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Basal Cell Carcinoma vs. Squamous Cell Carcinoma

BCC is the most common type of skin cancer and occurs in sun-exposed areas. SCC may occur on any skin surface, but is also most commonly seen on sun-exposed areas. SCC may arise from actinic keratoses and sites of chronic wounds or scarring. SCC is more common and...

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Melanoma Recognition

Melanoma accounts for the majority of deaths resulting from skin cancer. It is an aggressive malignancy of the pigment-producing melanocytes. The “ugly duckling” sign characterizes a lesion that appears to be an outlier in the presence of similar-appearing moles. The...

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