Differential Diagnosis for 13 Y.O. Patient
Single Most Likely Diagnosis
- Viral Gastroenteritis: This is the most likely diagnosis given the symptoms of cough, nausea, diarrhea, and fever. The negative COVID-19 and influenza tests reduce the likelihood of these specific viral infections, but the patient could still have another type of viral gastroenteritis, such as norovirus or rotavirus.
Other Likely Diagnoses
- Acute Bronchitis: The cough and fever could suggest an acute bronchitis, possibly caused by a viral or bacterial infection.
- Common Cold: Although the patient has gastrointestinal symptoms, the cough and fever could also be consistent with a common cold, especially if the gastrointestinal symptoms are mild.
- Food Poisoning: The nausea, diarrhea, and fever could be indicative of food poisoning, which is a common cause of gastrointestinal symptoms in children.
Do Not Miss Diagnoses
- Appendicitis: Although less likely, appendicitis is a serious condition that requires prompt surgical intervention. The nausea, fever, and abdominal pain (if present) could be indicative of appendicitis.
- Pneumonia: The cough and fever could suggest pneumonia, which is a serious infection that requires prompt antibiotic treatment.
- Inflammatory Bowel Disease (IBD): The gastrointestinal symptoms could be indicative of IBD, such as Crohn's disease or ulcerative colitis, which require prompt medical attention.
Rare Diagnoses
- Tuberculosis (TB): Although rare in children, TB is a serious infection that requires prompt treatment. The cough and fever could be indicative of TB, especially if the patient has been exposed to someone with TB.
- Cystic Fibrosis: The recurrent respiratory and gastrointestinal symptoms could be indicative of cystic fibrosis, a genetic disorder that requires prompt medical attention.
- HUS (Hemolytic Uremic Syndrome): The diarrhea and fever could be indicative of HUS, a rare but serious condition that requires prompt medical attention.