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.
Clinical Course: Over the next 6 months, pubic hair growth is noted. His testes enlarge to 3-4 cm in length and his height increases by 5 cm. Puberty refers to the biological changes that lead to reproductive capability while adolescence generally refers to the psychosocial changes that occur. The sequence of events that occur during puberty are generally fairly predictable. The timing of these events, however may be highly variable.