Hi. I appreciate your concern. Because the symptoms described above, this condition called alcohol intoxication. The person did not eat before drinking, because he had a drink at 4 o clock. In this case drinking alcohol has caused hypoglycemia. Several alterations in the metabolic state of the liver and other organs occur in response to the presence of alcohol in the body and can result in low blood sugar levels (low glucose levels, or hypoglycemia) Because glucose is the primary energy source of the brain, hypoglycemia can contribute to hangover symptoms such as weakness, chills and tremors. Hard alcohol drinks irritate the stomach lining, leading to inflammation (gastritis). Moreover, pancreatic secretion is stimulated and intestinal activity increased. These effects taken together can contribute to the nausea, and vomiting. Alcohol depresses the nerves that control involuntary actions like breathing. Alcohol can cause breathing problems. Such complaints require medical care because they may be life-threatening. Kind regards.