»	How common is acne?
»	What is the pathophysiology of acne?
»	What are the acne subtypes.
»	How does the composition of sebum contribute to the formation of acne?
»	Does stress exacerbate acne?
»	Does diet affect acne?
»	When can teenagers with acne expect their acne to resolve?
»	Discuss the topical therapy of acne vulgaris.
»	Discuss oral antibiotic use in acne vulgaris.
»	Will the oral antibiotics used in acne interfere with the efficacy of oral contraceptives (OCs) to prevent pregnancy?
»	Discuss the use of OCs in the treatment of acne.
»	When should a patient be started on isotretinoin therapy?
»	What are the side effects of isotretinoin?
»	What about depression and suicide with isotretinoin?
»	Discuss light and laser therapy of acne vulgaris.
»	What is SAPHO syndrome?
»	Is there a difference between neonatal acne and infantile acne?
»	What is neonatal cephalic pustulosis?
»	What is perioral dermatitis?
»	Do any drugs cause or aggravate acne?
»	How does steroid acne differ from acne vulgaris?
»	What is pyoderma faciale?
»	How do you treat pyoderma faciale?
»	What is acne fulminans?
»	What is hidradenitis suppurativa?
»	How do you treat hidradenitis suppurativa?
»	Discuss acne rosacea.
»	How is acne rosacea treated?
»	What is Favre-Racouchot syndrome?

Do any drugs cause or aggravate acne?

A wide range of drugs have been reported to cause or aggravate acne, although many of these associations are isolated case reports (Table 21-2).

Table 21-2. Drugs That Cause or Aggravate Acne
	Steroid hormones Topical corticosteroids Systemic corticosteroids Anabolic steroids Some progestins Testosterone Antidepressants Lithium Amineptine Antiepileptic drugs Phenytoin Trimethadione	Halogens Iodides Bromides Halogenated hydrocarbons Antituberculous drugs Isoniazid Miscellaneous drugs Thiourea Thiouracil PUVA

PUVA, Psoralen plus ultraviolet light, type A.