There are many causes of abdominal bloating, including overeating, excessive gas buildup, lactose intolerance, a food allergy, air swallowing (aerophagia), irritable bowel syndrome (which affects the lower gastrointestinal tract), hernia, premenstrual syndrome (PMS), partial bowel obstruction, constipation, menstruation, diverticulosis and pregnancy. Other causes include contraceptive pills, too much alcohol, too little protein in the diet, carbonated drinks and excessive water intake.
Causes of low back pain include a strained or overused muscle, injury, aging, arthritis, broken vertebrae (compression fractures) or a herniated disc. Other causes include disc disorders (any condition affecting the discs), slipped disc, osteoarthritis (joint degeneration), nerve conditions (such as shingles) or spinal conditions (for example, arthritis or scoliosis). There are several types of back pain, including sciatica (pressure on the sciatic nerve), coccydynia (pain in the tailbone), lower back pain, middle back pain and upper back pain.