Side effects of 18-month vaccines?
⚡ Short answer: Side effects from 18-month vaccines are usually mild and temporary — swelling at the injection site, fussiness, or a pink rash appearing a few days later are expected, and if fever doesn't exceed 39°C and your baby looks fine, there's no need to worry.
Anonymous
18 aylık bebek annesi · Health
My baby got their 18-month vaccine — what side effects should I expect? Should I worry?
Maiyko AI ADVISOR
The real reply from the in-app AI advisor
Worrying about vaccine side effects is completely natural. The MMR (measles-mumps-rubella) and chickenpox vaccines given at 18 months trigger the immune system, so mild side effects are expected:
- First 24-48 hours: slight swelling, redness, or soreness at the shot site, fussiness, low-grade fever
- Days 5-12: possible pink rash (from MMR) or low-grade fever — usually no cause for concern
The Health Ministry classifies these as expected, temporary side effects. Signs that warrant concern: fever over 39°C, seizures, difficulty breathing, extreme lethargy, or unresponsiveness.
For mild fever, plenty of fluids and doctor-recommended fever reducer at the right dose are sufficient. Most babies get through this stage just fine.
Note: This information is not medical advice; please consult your doctor about medications and dosages.
⚕️ Health note: This answer is for general information only; it is not medical advice. Every baby is different — for decisions about your baby's health, consult your pediatrician.
This answer is general — yours can be personal 🐦
In the app, Maiyko AI knows your baby's age and records and gives you a tailored answer. Coming soon to the App Store.