Mastitis: Symptoms, Causes & Treatment for Breastfeeding Mothers

A sudden tender, swollen, or sore spot on your breast while you're nursing is often the first sign of mastitis. It's a fairly common problem in the early weeks of breastfeeding, and it just means the breast tissue has become inflamed. 

Mastitis can happen alongside a bacterial infection, but it doesn't always start that way. Often, it begins simply as inflammation, before any infection sets in. That's exactly why catching it early matters. Do that, and you can avoid complications and keep breastfeeding without a major setback. Let’s understand this better.

What Is Mastitis?

Mastitis usually affects just one breast at a time. It's especially common in the first few months of breastfeeding, which is why it's often called "lactational mastitis." It isn't a single, fixed condition either. It exists more as a spectrum, starting with inflammation and swelling caused by milk not draining properly (called milk stasis), and in some cases progressing to a bacterial infection or, less commonly, a breast abscess.

You might also hear it referred to as "breast mastitis," and while people use the terms interchangeably, not every case involves infection. That also means antibiotics aren't always necessary. It really depends on what's driving the inflammation.

Causes of Mastitis

Most of the time, mastitis comes down to two things: an oversupply of milk (hyperlactation) or milk that isn't draining well and gets trapped. When milk doesn't clear properly during feeds, the breast tissue can become inflamed and swollen, and that's essentially where mastitis starts.
A few things tend to come up again and again as contributing factors:

• Poor positioning or latch during breastfeeding
• Missed feeds or long gaps between them
• Sudden changes in how often you're breastfeeding
• Overpumping or an oversupply of milk
• Tight bras or clothing pressing on the breast
• Having had mastitis before

When bacterial mastitis does occur, it is often linked to microbes like Staphylococcus aureus. Cracked or damaged nipples can also give bacteria an easier way in.

Common Mastitis Symptoms

Common symptoms of mastitis include:

• Pain or a burning sensation in the breast
• Swelling and tenderness
• Warmth over the affected area
• Redness or skin discolouration
• A hard or swollen patch within the breast
• Nipple discharge, sometimes with streaks of blood
• Fever or a feverish feeling
• Chills, body aches, and fatigue

Some early signs of mastitis can show up within hours. It's also worth knowing that redness can be harder to spot on brown or black skin. So if the skin doesn't look particularly red but you're noticing pain, warmth, or swelling, don't brush it off just because the redness isn't obvious.

Lactational Mastitis (What Breastfeeding Mothers Should Know)

Here's some reassurance: lactational mastitis usually doesn't mean you need to stop breastfeeding. In fact, most mothers are encouraged to keep feeding as normal. Stopping suddenly can actually make things worse, since it allows milk to build up further and increases fullness in the breast.

Current guidance also advises against deep breast massage, pumping more than your baby actually needs, or trying to forcefully empty the breast. These habits can end up making the inflammation worse and may even contribute to tissue damage or oversupply. The better approach is to feed in whatever way feels comfortable for you, without trying to remove extra milk you don't need to.

If feeding difficulties keep triggering these symptoms, it's worth having a lactation consultant take a look at positioning and latch.

How Is Mastitis Diagnosed?

Mastitis diagnosis is usually based on your symptoms and a physical exam. Your gynaecologist doctor will likely ask about a few things before examining the breast itself: 

• Your breastfeeding routine
• Any past episodes
• Nipple injuries 
• Current symptoms

In straightforward cases, that's often all that's needed and no extensive testing is required. But if symptoms are severe, aren't improving, or seem to point toward a breast abscess, an ultrasound might be recommended.

Treatment for Mastitis

Treatment depends on whether mastitis is mainly inflammatory or has moved into a bacterial infection.

For milder symptoms, supportive care is often enough:

• Keep breastfeeding as your baby needs
• Drink plenty of fluids
• Use a cold compress to ease pain and swelling
• Take pain relief such as paracetamol or ibuprofen if needed
• Avoid tight bras or restrictive clothing
• Skip deep or forceful breast massage
• Cut back on unnecessary pumping or expressing

If things aren't improving within roughly 12 to 24 hours of trying supportive care, or if symptoms are getting worse, it's time to get checked by a doctor. 

Your doctor may prescribe antibiotics as mastitis medication. Flucloxacillin and dicloxacillin are commonly used, and cephalexin is another option where available. That said, the right choice depends on your individual situation and your baby's.

What Happens If Mastitis Is Left Untreated?

If mastitis goes untreated, or isn't managed well, it can sometimes progress into a breast abscess, a localised pocket of fluid that typically needs to be drained along with antibiotic treatment. Signs of an abscess include ongoing swelling, pain, redness, or a lump that doesn't go away. An ultrasound is usually used to confirm it.

When Should You See a Doctor?

It's worth seeing a doctor if:

• Symptoms are getting worse instead of better
• You develop severe weakness, fever, or chills
• Breast tenderness or swelling isn't easing up despite home care
• A lump keeps growing or just won't resolve
• Symptoms haven't improved within 12 to 24 hours
• You notice unusual nipple discharge
• Mastitis keeps coming back
• You're feeling generally unwell or suspect you might have an abscess

If you need specialised care, it helps to see a gynaecologist experienced in postpartum and breastfeeding conditions. Apollo Cradle's top gynaecologists in Bangalore can guide you through diagnosis and treatment if you're dealing with mastitis and need expert support.

Conclusion

Mastitis is common among breastfeeding mothers and, in most cases, very treatable, but it's more than just a "blocked duct" and shouldn't be brushed off as one. Knowing the early signs, understanding the symptoms, and getting timely care can go a long way in preventing things from progressing to an abscess or a full-blown infection.

Most importantly, mastitis usually doesn't mean the end of your breastfeeding. With the right support, some adjustments to how you're feeding, and treatment when it's needed, most mothers recover and continue breastfeeding without any long-term issues.