Androgenic Alopecia (Male Pattern Baldness) Description ■ Androgenic alopecia is premature loss of hair of the central scalp. History ■ Alopecia is a physiologic reaction induced by androgens in genetically predisposed men. ■ The pattern of inheritance is probably polygenic.…
Lupus Erythematosus General Description ■ Cutaneous lupus erythematosus is a disease with a wide spectrum of manifestations ranging from solitary chronic skin lesions in chronic cutaneous lupus erythematosus (CCLE), to widespread polymorphous lesions in subacute cutaneous lupus erythematosus (SCLE), to…
Warts (Verruca Vulgaris) Description ■ Warts are benign epidermal proliferations caused by human papillomavirus (HPV) infection, a double-stranded DNA virus, which infects skin and mucous membranes. ■ There are more than 150 different types of HPV. New subtypes are defined…
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…
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…