What causes a feeling of heaviness and distension in the lower abdomen?

Lower abdominal heaviness and distension may be caused by multiple factors, mainly including: 1. **Physiological factors**: Such as before or during menstruation, when estrogen and progesterone stimulate pelvic congestion, which may lead to a feeling of heaviness and distension in the lower abdomen. 2. **Gastrointestinal diseases**: Such as indigestion, gastritis, gastric ulcer, or enteritis, often accompanied by symptoms such as abdominal distension, abdominal pain, and diarrhea. 3. **Urinary system diseases**: Such as cystitis or pyelonephritis (urinary tract infections), which may cause lower abdominal heaviness and distension along with symptoms like frequent urination, urgency, and painful urination. 4. **Gynecological diseases**: Such as ovarian cysts or uterine fibroids. When the tumor grows larger, it may exert pressure on the abdomen, leading to a sensation of heaviness and distension in the lower abdomen. If symptoms persist or worsen, timely medical consultation is recommended for targeted diagnosis and treatment.