title: Acne aestivalis.
abstract: This is the first American report, to our knowledge, of a case of acne aestivalis, which occurred in a woman with a recurrent acneform eruption in summertime. The histopathologic sequence was very similar to that found in cases of steroid acne; namely, local necrosis of the follicular epithelium was followed by the formation of a comedo. No cause was found. Treatment with tretinoin brought about regression of the lesions.
mesh_terms: D000152:Acne Vulgaris / Q000473:pathology / Q000628:therapy; D000284:Administration, Oral; D000287:Administration, Topical; D000328:Adult; D001706:Biopsy; D005260:Female; D006801:Humans; D010507:Periodicity; D011829:Radiation Dosage; D012621:Seasons; D012867:Skin / Q000382:microbiology / Q000473:pathology; D013752:Tetracycline / Q000008:administration & dosage / Q000627:therapeutic use; D014212:Tretinoin / Q000008:administration & dosage / Q000627:therapeutic use; D014467:Ultraviolet Therapy
chemical_list: D014212:Tretinoin; D013752:Tetracycline