Hi,
Thanks for posting your query.
With the available described details, there appears to high possibility of Acute
viral gastroenteritis or small intestinal diarrhea.
Presence of smelly diarrhea suggests the diagnosis.
You should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up.
You should go for
complete blood count,
erythrocyte sedimentation rate,
ultrasound imaging, and serum electrolytes, renal function test.
Your partner should take complete antibiotic therapy, antispasmodics, probiotics, antipyretics, if needed.
Frequent watery diarrhea and vomiting may cause weakness due to loss potassium.
Your partner should maintain your hydration status by taking potassium rich liquids.
Take
soft diet along with yogurt and banana.
Avoid milk and all milk related products.
Take care,
Dr. Mayank Bhargava