What it is
You saw blood or mucus in your baby's diaper, or someone said 'dairy,' and now you are searching 'CMPA' and 'elimination diet.' Cow's milk protein allergy means the baby reacts to milk proteins that pass into your milk. It is the most common food reaction in babies, and still rarer than social media suggests. Fussiness and gas alone are usually not it.
What's typical
It affects about 2 to 3 percent of babies in the first year; fewer of those are fully breastfed. The usual picture is streaks of blood or mucus in a well, growing baby, starting between two and eight weeks. When dairy leaves the mother's diet, stool usually clears within two to four weeks. Most babies outgrow it by one to three years.
What's known
The AAP and the Academy of Breastfeeding Medicine advise removing one food at a time, starting with dairy, for two to four weeks, then adding it back to confirm. They do not recommend broad elimination diets.
What helps
- Take a photo of the diaper and note the date. Bring it to the visit.
- If you and your provider decide to cut dairy, read labels for casein and whey, not just 'milk.'
- Ask a dietitian about calcium before dairy goes.
When to call someone
- Nowa lot of blood, a pale or limp baby, forceful vomiting, or hives with face swelling.
- Todayany blood in the stool for the first time, or blood with poor weight gain.
- At your next visitongoing mucus, eczema that will not settle, or a plan to test foods back in.
Who helps
Tools: Postpartum Meal Planner · Birthworker Directory
Related
- Diaper counts and what newborn poop looks likeBaby Basics
- Reflux, spit-up, and feedingFeeding Your Baby
- Formula feeding: choosing, preparing, and doing it wellFeeding Your Baby
- Starting solids around six monthsFeeding Your Baby
What mothers here say
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Experiences and questions are their authors' own, not reviewed advice. The topic's steward lists the ones that help most in a credited digest once there is one. Unusual experiences stay, with a note.
Sources
- Academy of Breastfeeding Medicine — Clinical protocol on allergic proctocolitis in the exclusively breastfed infant
- American Academy of Pediatrics — Patient FAQ on milk allergy in infants
Sources are named, not yet linked. The steward verifies each one and adds the link.
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