Hi, Immune system weakens by many disorders,some present at birth while others result from environmental factors.
Kids who have this kind of discomfort after consuming milk might have lactose intolerance. Any way proper case taking may help your child to cure symptoms by homoeopathic treatment with out any side effects.
Next Steps
consult homoeopathic doctor near by you.
Health Tips
Eating healthy diet and proper sleep can make your child to strengthen the immune system.