Topics: world population, demographic transition, census, age pyramid, population change, population pyramid, doubling time, rule of 70, demographic indicators, skin diseases, skin lesions, measles, leprosy, Hansen's diseases, dermatophytosis, onchoceraciasis, herpex zooster, tinea corporis, acne vulgaris, alopecia areata, chronic discoid lupus erythematodes

Topics: skin lesions, Macules, patches, papules, vesicles, plaques, nodules, Measles, Chicken pox, Herpes zooster, Leprosy, Dermatophytosis, Pitriasis, Filariasis, Onchocerciasis, scabies, dermatitis, kaposi sarcoma, squamous cell carcinoma, Hansen’s disease, Tinea corporis