Differential Diagnosis for "Also throwing up now"

• Single most likely diagnosis:
  • Gastroenteritis: This is a common condition characterized by inflammation of the stomach and intestines, often caused by viral or bacterial infections, leading to symptoms like vomiting, diarrhea, and abdominal cramps. The presentation of vomiting in addition to other symptoms suggests an infectious or inflammatory cause.
• Other Likely diagnoses:
  • Food poisoning: Similar to gastroenteritis, food poisoning can cause sudden onset of vomiting, often accompanied by diarrhea and stomach cramps, after consuming contaminated food or drinks.
  • Viral gastroenteritis (Norovirus, Rotavirus): These viruses are highly contagious and can cause severe vomiting, diarrhea, and stomach cramps.
  • Gastritis: Inflammation of the stomach lining can cause vomiting, especially after eating certain foods or drinks, and can be acute or chronic.
• Do Not Miss (ddxs that may not be likely, but would be deadly if missed.):
  • Appendicitis: Although less common, appendicitis can present with vomiting, especially if the appendix ruptures, leading to peritonitis, a life-threatening condition.
  • Intestinal obstruction: This is a blockage that prevents normal flow of the products of digestion, which can cause severe vomiting, constipation, and abdominal pain, requiring immediate medical attention.
  • Pancreatitis: Inflammation of the pancreas can cause severe abdominal pain, vomiting, and may lead to life-threatening complications if not promptly treated.
• Rare diagnoses:
  • Brain tumor or increased intracranial pressure: Although rare, increased pressure in the brain or a brain tumor can cause vomiting, often accompanied by headache, confusion, or neurological deficits.
  • Meningitis or encephalitis: Infections of the meninges or brain can present with vomiting, fever, headache, and stiff neck, requiring urgent medical evaluation.
  • Adrenal insufficiency (Addisonian crisis): A life-threatening condition where the adrenal glands do not produce enough cortisol and aldosterone, leading to vomiting, abdominal pain, and hypotension.