When prostate cancer advances locally or metastasizes to distant parts of the body, particularly the lymph nodes and bones, specific systemic and localized symptoms begin to manifest. Common warning signs of advanced metastatic spread include persistent, deep bone pain—frequently felt in the lower back, hips, thighs, or ribs—unexplained weight loss, chronic fatigue, lower extremity swelling, sudden urinary incontinence or complete retention, and neurological deficits if spinal compression occurs. Regular prostate-specific antigen screening and diagnostic imaging are critical to catching disease progression before severe metastatic symptoms emerge.