Atrophic vaginitis is a condition that affects postmenopausal women, characterized by a pale, thin vaginal epithelium due to declining estrogen levels. Diagnosis involves examining symptoms, signs of vaginal dryness and atrophy, and ruling out other infections. Treatment begins with lubricants and moisturizers, while local estrogen therapies applied topically to the vagina are most effective at treating symptoms and reversing atrophy by improving blood flow and tissue health. Proper treatment typically provides relief, but may require long-term maintenance.