What is sternum pain and what causes it

The sternum (your “breastbone”) sits right in the center of your chest like a protective
bodyguard for your heart and lungs. So when it hurts, your brain tends to jump straight to:
“Uh-oh… am I dying?” (Very relatable.)

The good news: sternum pain is often caused by non-dangerous issues like
irritated rib cartilage, a pulled chest muscle, or acid reflux. The important news:
some chest pain can be serious, especially when it comes with symptoms like
shortness of breath, sweating, fainting, or pain spreading to your arm, jaw, or back.
If you’re ever unsure, treat it like an emergency and get checked.

This article breaks down what sternum pain is, why it happens, how it’s evaluated, and what
you can dowithout turning your browser history into a 3 a.m. medical drama marathon.

What “sternum pain” actually means

“Sternum pain” usually describes discomfort you feel in the center of your cheston top of
or around the breastbone. But here’s the twist: the sternum itself isn’t always the true
source. Pain can come from:

• Rib cartilage where ribs attach to the sternum
• Chest muscles (especially after lifting, coughing, or awkward posture)
• The esophagus (acid reflux and spasms can feel like chest pain)
• The lungs (inflammation can cause sharp pain with breathing)
• The heart (less common in younger people, but always taken seriously)
• Nerves/skin (like shingles, which can hurt before a rash appears)

Quick anatomy: why the center of your chest is so “dramatic”

Your sternum has three parts: the manubrium (top), the body
(middle), and the xiphoid process (a small tip at the bottom). Ribs connect
to it through cartilage (flexible tissue), which is great for breathinguntil that cartilage
gets irritated. The sternum is also close neighbors with the esophagus, major blood vessels,
and the lining around your heart and lungs. So a lot of different problems can feel like
“sternum pain,” even when the sternum is innocent.

The most common causes of sternum pain

1) Costochondritis (irritated rib cartilage)

Costochondritis is one of the most common reasons people feel pain near the sternum. It’s an
inflammation/irritation of the cartilage where your ribs meet your breastbone. The pain is
often:

• Sharp, aching, or pressure-like
• Worse with movement (twisting, lifting, reaching, deep breathing)
• Reproducible (pressing on the area can trigger the pain)

Triggers can include heavy lifting, intense workouts, chest strain from coughing, minor
injuries, or sometimes no clear cause at all. A related condition called
Tietze syndrome is similar but typically includes noticeable swelling.

2) Muscle strain (your chest is sore for extremely normal reasons)

If you’ve done bench press, push-ups, heavy yard work, a new sport, or even carried a too-heavy
backpack like it’s a personality trait, your chest muscles can complain. A strain in the
pectoral muscles or the small muscles between ribs can cause pain that feels centered near the
sternumespecially when you move your arms, push, pull, or take a deep breath.

Clue it’s muscular: it’s often tied to a recent activity, and you might feel tenderness or a
“pulled” sensation with certain motions.

3) Xiphoid process pain (the tiny tip that can cause big annoyance)

The xiphoid process is the small point at the bottom of the sternum. It can get irritated by
trauma, inflammation, or even pressure from activities that compress the upper abdomen/chest.
Some people feel pain that radiates upward into the center chest or downward toward the upper
belly. It’s uncommon, but it’s realand it can mimic other problems, which is why clinicians
take care to rule out more serious causes first.

4) Acid reflux / GERD (heartburn pretending to be chest pain)

Acid reflux happens when stomach contents back up into the esophagus. The esophagus runs
through the center of your chest, so irritation there can feel like burning or tightness
behind the sternum. When reflux becomes frequent, it’s often called
GERD (gastroesophageal reflux disease).

Sternum-adjacent reflux clues include:

• Burning sensation after meals (especially spicy, fatty, or acidic foods)
• Pain that’s worse when lying down or bending over
• Sour taste, regurgitation, burping, or a “lump in throat” feeling
• Sometimes cough, hoarseness, or throat irritation

Reflux chest pain can feel similar to heart-related chest pain. That’s why medical guidance
generally says: rule out heart causes first if the symptoms are concerning or new.

5) Cough-related strain and respiratory inflammation

A long cough (from a cold, flu, bronchitis, or allergies) can strain chest wall muscles and
inflame tissues. In addition, inflammation of the lung lining can cause
pleuritic painsharp pain that worsens with deep breaths, coughing, or sneezing.
People often describe it as a “stabbing” sensation.

Less commonbut importantcauses

6) Injury or trauma (including sternal bruises or fractures)

Falls, car accidents (seatbelt impact), sports collisions, or direct hits can bruise the
sternum or, in more severe cases, fracture it. A sternal fracture is more likely after major
blunt trauma and should be evaluated promptly because clinicians also look for associated
injuries.

7) Pericarditis (inflammation around the heart)

Pericarditis is inflammation of the sac-like lining around the heart. The chest pain is often
described as sharp and may worsen with deep breaths, coughing, or lying down, and improve when
sitting up and leaning forward. It can occur after viral infections and can come with fever,
fatigue, or shortness of breath. This needs medical evaluation.

8) Pulmonary embolism (blood clot in the lungs)

A pulmonary embolism can cause sudden shortness of breath and chest pain (often worse with
breathing). It’s serious and requires urgent care. Risk is higher with recent surgery, long
immobility (like long travel), certain medical conditions, and other factors.

9) Panic attacks and anxiety (very real physical symptoms)

Anxiety can cause chest tightness, rapid heartbeat, shortness of breath, dizziness, and
chest painespecially during panic attacks. The symptoms can feel intense and scary (because
your body is basically hitting the “alarm” button). Still, it’s important not to assume it’s
“just anxiety” if chest pain is new, severe, or comes with concerning symptoms.

10) Shingles (pain before the rash shows up)

Shingles can cause pain, tingling, or burning in a band on one side of the body before a rash
appears. If that band is on the chest, it can feel like unexplained sternum or chest wall pain
for a few daysthen the rash arrives like an unwanted sequel.

When sternum pain is an emergency

Call 911 (or your local emergency number) or seek emergency care right away if
chest/sternum pain is accompanied by any of the following:

• Pressure, squeezing, or crushing sensation in the chest
• Shortness of breath
• Fainting, severe dizziness, or confusion
• Cold sweat, nausea, or vomiting
• Pain spreading to the arm, shoulder, neck, jaw, or back
• Sudden severe pain, especially with weakness or a “something is very wrong” feeling
• Fast heartbeat plus trouble breathing

Even if you’re young and healthy, new or severe chest pain deserves attention. The safest
approach is: don’t diagnose chest pain at home if it’s intense, unexplained, or
paired with red flags.

How clinicians figure out what’s causing it

Because sternum pain overlaps with many systems, clinicians usually take a stepwise approach:

1. History: When did it start? What triggers it? Any injury, cough, recent
   illness, stress, or reflux symptoms? Any heart or clot risk factors?
2. Physical exam: Pressing along the sternum and rib joints, checking for
   tenderness/swelling, listening to heart and lungs.
3. Rule out urgent causes: Depending on symptoms, this may include an ECG,
   chest imaging, and/or blood tests.
4. Targeted testing: If reflux is suspected, clinicians may consider a trial of
   therapy or specialized testing in certain cases. If inflammation/infection is suspected,
   they’ll test accordingly.

One helpful clue: musculoskeletal pain (like costochondritis or muscle strain) is often
reproducibleyou can trigger it with pressure or certain movements. That doesn’t
automatically make it “harmless,” but it helps guide the evaluation.

What you can do at home (when it’s mild and not an emergency)

If your symptoms are mild, you don’t have red flags, and you’ve been evaluated (or your
clinician has advised home care), these strategies are often used depending on the likely cause:

For suspected chest wall pain (costochondritis or muscle strain)

• Rest from aggravating movements (heavy lifting, intense pushing/pulling)
• Heat or ice for comfort (many people try both and pick the winner)
• Over-the-counter pain relief may help for some people, but follow label
  directions and check with a clinician if you have medical conditions, take other meds, or
  need frequent doses
• Gentle stretching and posture resets (especially if you sit hunched a lot)

For suspected reflux-related sternum pain

• Eat smaller meals and avoid lying down right after eating
• Notice trigger foods (spicy, fatty, chocolate, caffeine, peppermint, acidic foods)
• Limit alcohol and avoid smoking/vaping
• Consider elevating the head of your bed if nighttime symptoms are common
• OTC antacids or acid-reducing meds may help some people, but frequent chest pain needs
  medical evaluation so heart-related causes aren’t missed

For anxiety-related chest tightness

If you’ve been medically evaluated and anxiety is the likely cause, techniques like slow
breathing (longer exhales), grounding exercises, and reducing caffeine can help. Therapy and
evidence-based treatments can be very effective for panic symptoms. But again: chest pain that
is new, severe, or concerning should be checked first.

How long does sternum pain last?

It depends on the cause:

• Muscle strain: often days to a couple of weeks (longer if you keep reinjuring it)
• Costochondritis: can improve in days to weeks, but sometimes lingers longer,
  especially if the triggers continue
• Reflux: may come and go; frequent symptoms often improve with consistent lifestyle
  changes and/or treatment
• Post-viral inflammation: may improve as the illness resolves, though cough strain
  can take time

If pain is persistent, worsening, waking you up at night, or interfering with daily activities,
get it evaluated. “It’s probably nothing” is not a long-term treatment plan.

Practical examples: what different causes can feel like

• Costochondritis: “It hurts when I press this spot near my sternum or when I twist.”
• Muscle strain: “It started after push-ups / moving furniture. It hurts when I push or lift.”
• GERD: “Burning behind the sternum after eating, worse when I lie down.”
• Pleurisy: “Sharp pain when I breathe in deeply or cough.”
• Panic attack: “My chest hurts, my heart races, I feel shaky, and I can’t catch my breath.”
• Shingles: “One-sided burning pain on my chest… then a rash showed up.”

FAQs people secretly Google (you’re not alone)

Can sternum pain be “just posture”?

Sometimes. Slumped posture can tighten chest muscles, irritate the upper back/neck, and change
how your ribs and sternum move when you breathe. But posture shouldn’t be blamed for severe,
sudden, or concerning chest pain.

Is sternum pain more likely after working out?

Yesespecially if it’s a new routine or you increased intensity. Chest wall structures are
easy to overwork (hello, push-ups). The key is whether symptoms improve with rest and whether
there are any red flags.

What’s the difference between heartburn and heart pain?

They can overlap, which is why clinicians take chest pain seriously. Heartburn is often a
burning sensation linked to meals or lying down, while heart-related pain is often pressure-like
and may come with shortness of breath, sweating, or radiating pain. If you can’t tell, get checked.

Real-life experiences: what sternum pain often feels like (and why it’s confusing)

People rarely describe sternum pain the same waybecause different causes create different
“pain personalities.” Here are common experiences clinicians hear, based on patterns people
report in real life. (No, your sternum is not trying to ruin your week. It’s just… expressive.)

Experience #1: The “I did one workout and now I’m fragile” moment.
Someone tries a new routinepush-ups, bench press, dips, or even an enthusiastic plankand the
next day there’s a sore, tender pain near the center chest. It feels worse when pushing a door
open, lifting a backpack, or stretching arms wide. Pressing near the rib attachments may feel
tender, like the area is bruised. This experience often points toward muscle strain or
irritated chest wall structures. The confusion happens because it’s in the center of the chest,
where everyone assumes “heart.” But the timing (after activity) and movement-related pain are
key clues.

Experience #2: The “my cough has turned my ribs into castanets” situation.
After a viral illness, allergies, or bronchitis, coughing becomes frequentsometimes for
weeks. People describe sharp pain near the sternum when they cough, laugh, or take a deep
breath. Some say it feels like “something is catching” in the chest. It can be pure muscle
strain from coughing, or it can be pleuritic-type pain where inflammation makes breathing feel
sharp. The biggest frustration here is that the original illness improves, but the chest pain
lingerslike your body forgot to end the free trial.

Experience #3: The “spicy dinner betrayed me” chest burn.
A very common story: burning behind the sternum after eating, especially with big, rich meals.
It’s worse when lying down, bending over, or sleeping flat. People may also notice sour taste,
burping, or that “lump in the throat” sensation. Many describe it as chest pain that feels
scaryuntil they realize it tracks with food timing. The tricky part is that reflux pain can
still be intense, and you should never assume chest pain is reflux until serious causes have
been ruled out when appropriate.

Experience #4: The “panic attack feels like a heart attack” spiral.
During panic, the body releases stress hormones and ramps up breathing and heart rate. People
report chest tightness or pain, racing heart, tingling, sweating, dizziness, and a sense of
doom. The sternum area can feel heavy or sharp. The experience is not “made up”it’s a real
physical stress response. Many people end up in urgent care or the ER (understandably), and
after medical evaluation, they learn that anxiety is a major contributor. With the right
treatment and coping strategies, these episodes can become far less frequent and less intense.

Experience #5: The “wait… why does this spot hurt when I touch it?” clue.
A lot of people discover their pain is reproducible: pressing along the breastbone edge or
rib joints triggers it, and certain twisting motions flare it up. This is a hallmark of chest
wall pain patterns such as costochondritis. People often describe it as sharp or aching and
localized, sometimes on the left side near the sternum. It can be alarming because it’s in the
“heart neighborhood,” but the tenderness-to-touch clue helps guide the next stepsespecially
after urgent causes are excluded.

Across these experiences, the most important theme is this: location alone isn’t enough.
Sternum pain can be mechanical, inflammatory, digestive, respiratory, neurologic, or cardiac.
If symptoms are new, severe, persistent, or paired with red flags, get evaluated. Peace of mind
is a legitimate medical outcome.

Conclusion

Sternum pain is common and often comes from chest wall irritation (like costochondritis or
muscle strain) or from reflux-related esophageal irritation. Less commonly, it can signal
conditions involving the lungs or heartso it’s smart to take it seriously, especially if
symptoms are intense, sudden, or accompanied by warning signs like shortness of breath,
fainting, sweating, or radiating pain.

The best approach is balanced: don’t panic at every twinge, but don’t ignore persistent or
concerning chest pain either. When in doubt, get checkedbecause guessing games are fun for
trivia night, not for your chest.