This is Dr Basu, experienced Internal Medicine Specialist.
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Clindamycin can cause diarrhea as side effecy known as antibiotic associated diarrhea.
THis is possible even without C diff infection.
C diff causes stomach distension, watery voluminous continuous diarrhea.
Your child will be much more sicker.
Hence very unlikely.
His symptoms will gradually improve with BRAT diet.
Culturelle should be fine for now to restore normal intestinal flora balance.
Yes, without watery stool , C diff test will not be very accurate.
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