Thanks for writing to health care magic.
After a episode of diarrhea
it takes some time for the baby to come back to the normal.
Your baby may not accept much during a episode because of nausea
. So because of the decreased intake she may loose weight.
During a episode of loose motions monitor the baby for signs of dehydration
1. Decreased skin turgor
2. Increasing thirst.
3. Sunken eyes.
6. Decreasing passage of urine.
Normally oral rehydration solution is given to replace the salts and water. Any fluid containing salt and sugar can also be given.
In case of further dehydration the child requires Intravenous fluids.
Hope this helps.