One symptom often triggers the other. Fortunately, abdominal bloating and nausea usually resolve themselves with time. Examples of conditions that cause abdominal bloating and nausea include: 1  acid reflux. 2  constipation. 3  gastroesophageal reflux disease (GERD). 4  gastrointestinal blockage. 5  gastroparesis. 6  giardiasis (an infection from an intestinal parasite).
Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy.
1 This âconstitutional delayâ of growth, development or puberty is the most common reason puberty is overdue, especially in boys. 2  A medical condition: A chronic disease â such as diabetes, cystic fibrosis, celiac disease, kidney disease or asthma â can delay puberty. Girls: Develop breasts, grow pubic hair and underarm hair and start menstruating (having periods). 2  Their hips widen and they have a growth spurt. 3  Boys: Grow pubic, facial and underarm hair. 4  Their testicles and penis get larger.