Syphilis Description ■ Syphilis is a sexually transmitted infectious disease caused by the spirochete Treponema pallidum. ■ The infection can affect any organ and may mimic various other diseases; thus it has been called the “great imitator.” ■ If left…
Impetigo Description ■ Impetigo is a common, highly contagious, superficial skin infection produced by Streptococcus pyogenes, Staphylococcus aureus, or a combination of both bacteria. ■ Bullous impetigo and nonbullous impetigo represent two clinical forms of the disease. ■ S. aureus…
Psoriasis Description ■ Psoriasis is a common chronic inflammatory disorder caused in large part by abnormal T-lymphocyte function. ■ Pink to red papules and plaques with thick white scale may be localized or widespread, involving the scalp, elbows, and knees.…
Acne Description ■ Acne is a papular or pustular eruption involving the face, chest, and back. History ■ Acne may occur at any age but is more common in the teenage years and may persist well into adulthood. ■ Twenty…
Acute Urticaria Description ■ Urticaria, or hives, is divided into acute and chronic forms based on the duration of the hives. ■ Acute urticaria, by definition, lasts for less than 6 weeks, whereas chronic urticaria lasts more than 6 weeks.…
Acute Eczematous Inflammation Description ■ Acute eczematous inflammation is characterized clinically by erythema, edema, and vesiculation. Weeping or oozing of acute lesions is typical. Pruritus is often severe. History ■ There are multiple causes of acute eczema. They include allergic…
Basic Principles of Treatment Maintaining the Skin Barrier ■ The skin assists in fluid homeostasis and protects against infections, toxins, and harmful effects of ultraviolet radiation. ■ The outermost layer of the epidermis, the stratum corneum, provides this protection through…