My baby was diagnosed with HSV-1 and I h

Call your baby's pediatrician today about the sore on your breast, and until they answer, do not nurse from that breast and do not give your baby any milk pumped from that side.

This is a feeding-safety question with a clinician's decision in the middle of it, so here is the whole plan in one place.

1. What you have already done vs what to do differently

Two things to tell the pediatrician plainly: the baby's HSV-1 diagnosis and its date, and the sore on your nipple with when it started and whether it has blisters.

2. The feeding decision tree (screenshot this)

```
Is there a sore, blister, crack or open skin on that breast RIGHT NOW?
├─ YES → Do not nurse that breast.
│ Do not give your baby milk expressed from that breast. Discard it.
│ Nurse the other side, or give milk expressed from the other side.
│ Keep the sore breast completely covered (clean bra + cloth pad).
│ Keep it covered until the skin is fully closed AND the clinician agrees.
└─ NO on both sides → Nursing is not blocked by this. Still: wash hands, no kissing the mouth.
```

Then two more rules that travel with the tree:

• Nobody kisses the baby's mouth or face — not you, not the other adult, not the sibling or elder in the house. Anyone with a cold sore on their lips keeps their distance from the baby's face and washes hands after touching the baby.
• No shared cups, bottles, spoons, towels or flannels with the baby; the pump parts are washed after every use.

Why the milk from the sore side goes in the bin: the US CDC's breastfeeding guidance on herpes says that milk hand-expressed or pumped from a breast with active lesions is not safe for the infant, while nursing or expressed milk from the unaffected breast is fine as long as the lesions on the affected breast are completely covered. The same CDC page notes these lesions are sometimes mistaken for something else, which is why a swab and an exam are worth the phone call rather than a guess at home.

Source: cdc https://www.cdc.gov/breastfeeding-special-circumstances/hcp/illnesses-conditions/herpes.html

3. Tonight / today, in about 25 minutes

First 5 minutes

1. Cover the sore breast with a clean bra and a clean cloth pad; change the pad if it is damp.
2. Put the pump parts for that side in a separate bag, labelled "sore side" — they are for supply only, and their milk is discarded.
3. Throw away any milk already pumped from that side.
4. Tell the other adult in the house the three rules: covered breast, binned milk, hands washed, no kissing the face.

Next feed (5 minutes)

1. Nurse or bottle-feed from the healthy side only. Wash hands with soap for about 20 seconds before you touch the baby or the breast, and again afterwards.

Pumping (5 minutes)

1. Wash every part that touched breast or milk in hot soapy water and let it dry fully before reassembling. Do not put the sore side's parts back on the healthy side.

Before bed (10 minutes)

1. Write down: when the sore started, whether there are blisters, whether you have had fever or chills, and whether you have taken anything for it.
2. Take one photo of the sore in good light (for the clinic, not for the internet).
3. Set an alarm for when the pediatrician's office opens, and write down your three questions before you go to sleep, so the tired version of you does not have to invent them.

4. What not to do

• Do not nurse the sore breast, and do not offer milk from it, even "just a little".
• Do not put expressed milk, honey, powders, antibiotic creams, antiseptics or herbal remedies on the sore to "help it heal" — none of that is a clinician's plan for you, and the nipple will not thank you.
• Do not change, double or stop the amoxicillin yourself. The clinician decides, and "it spread while I was on it" is important information for them.
• Do not let the baby nurse if the baby's own mouth or skin has blisters — that is a question for the pediatrician, and it changes the plan.
• Do not wait for the sore to resolve on its own.

5. Red flags — when to stop home care

Call your local emergency number now and go to the nearest emergency department (tell me your city or country and I will help you find the right local service) if the baby:

• is hard to wake, floppy, or does not respond when held;
• stops feeding entirely, or refuses breast and bottle;
• is working hard to breathe, breathing fast with the ribs pulling in, grunting, or the lips turning blue;
• has a fit (jerking with unresponsiveness) or will not wake afterwards;
• develops purple or red spots that do not fade when you press a clear glass firmly against them;
• is under three months old with a temperature of 38 °C (100.4 °F) or above, or a temperature that keeps dropping. (38 °C is the standard threshold used in paediatric emergency guidance; in an older baby, a temperature that high means call the pediatrician today, not tonight.)

Same-day medical care, not the emergency department, if the baby has: noticeably fewer wet nappies than usual, sunken fontanelle, repeated green vomit, or new blisters on the skin or mouth.

Same-day care for you if you develop fever or chills, or the breast becomes hot, red and very painful — do not wait it out, and do not keep nursing that side while you wait.

Tell the emergency dispatcher or the clinic that the baby has a diagnosed HSV-1 infection and that you have an active sore on your breast. That sentence changes what they do next.

6. Scripts you can screenshot

To the pediatrician (Monday morning, or the after-hours line tonight if a baby red flag appears):

> "Hi, this is [your name], [baby]'s mother. [Baby] was diagnosed with HSV-1 on [date]. I have a sore/crack on my nipple on the [left/right] breast that started on [date] and has spread — [with/without] blisters. I have been pumping that side and nursing from the other side, and I'm taking the amoxicillin I was prescribed. My questions: one, is it safe to nurse from the unaffected breast right now? two, should I stop breastfeeding entirely for now? three, should the sore be swabbed? four, do I need treatment to reduce viral shedding, and would that change the feeding plan? five, does [baby] need to be seen again, and should I tell you if anything changes?"

To the other adult in the house:

> "Before you pick [baby] up: wash your hands with soap. Do not kiss his/her mouth or face. The sore breast stays covered, and any milk from that side is binned, not fed to the baby. If [baby] gets hard to wake, stops feeding, breathes hard, or has spots that do not fade under a glass, call the emergency number straight away and send me a message."

7. What "good" looks like in 24 hours

Not a cure — a clear, safe night and a plan in hand:

• The sore is not bigger tomorrow, no new blisters, no spreading redness.
• The baby fed from the healthy side as usual, and is bright and settled after feeds.
• No new lesions on the baby's skin or mouth, and temperature normal.
• You got an answer from a clinician: swab or no swab, whether treatment is needed, and when you may nurse that side again.
• The household is running on the three rules without anyone improvising.

Two figures to treat as gentle guides rather than hard rules: "about 6 wet nappies" is the target already written in your own feeding log, not a verified medical number, and "about 20 seconds" of handwashing is standard public-health advice, not a clinical threshold.

One thing I cannot tell you from here: whether that sore is viral, bacterial, or a cracked nipple — an exam and a swab decide that, and the spreading sore is exactly the reason to have it looked at today.

If it helps, I can turn the questions above and the red-flag list into a single one-page sheet you can screenshot or hand over at the clinic.