Diagnosing perimenopause can be complex due to the absence of a definitive test. According to the British Menopause Society, perimenopause is characterized by changes in menstrual cycle patterns, such as infrequent periods and cycles becoming slightly longer, e.g., 6–7 weeks apart. Common symptoms include hot flushes, night sweats, cognitive changes, mood swings, sleep disturbances, and urogenital symptoms like vaginal dryness. In some cases, a trial of hormone replacement therapy (HRT) may be used to assess symptom improvement. It's essential to consult with a healthcare provider to evaluate symptoms and consider appropriate treatment options.