What Could be the Possible Diagnosis for Recurrent Gastric Pain, Fever, and Vomiting in an 11-Year-Old?

Red blood in stool accompanied by weakness and fever may be due to a serious health problem. You should consult a gastroenterologist immediately for a diagnosis and necessary treatment of your symptoms. Delaying in getting medical attention may worsen the condition.
 

After quitting tobacco, changes in bowel habits can occur, possibly leading to digestive discomfort. Stay hydrated, opt for fiber-rich foods, and consider probiotics to support gut health. 

It appears that your boyfriend may have an upset stomach after consuming a large number of multivitamin tablets that contain iron. Black, icky, tar-like poop and abdominal tenderness are indicative of possibly internal bleeding. The situation could have been aggravated considering he ingested Adderall, skipped meals, and drank alcohol. He must seek immediate medical attention.

Excess urine is not usually a symptom of liver cysts. However, people with fatty liver sometimes experience metabolic issues, causing them to retain fluids in their tissues and potentially leading to reduced urine output. For a healthy liver, it's essential to eat a nutritious diet, stay active, and limit alcohol consumption.

Jaundice makes your skin and eyes go yellow. Too much bilirubin in the blood causes it. Liver problems such as infections or blockages can be responsible for this. To get better from jaundice you need to take a lot of rest, eat healthy food, and stay away from alcohol. Drink plenty of water and follow the treatment recommended by your doctor.

Stomach heat and loose motions can happen due to gastroenteritis, food intolerance or allergies, or even stress and axiety. Stay hydrated by drinking fluids and try consuming bland, easily digestible foods.