Gum pain that feels intense or persistent usually signals inflammation, infection, or physical damage to the soft tissue around your teeth. The cause can range from something as fixable as brushing too hard to something that needs prompt treatment, like an abscess. About 42% of U.S. adults over 30 have some form of gum disease, making it one of the most common reasons gums hurt. But it’s far from the only one.
Gum Disease: The Most Likely Culprit
Gum disease exists on a spectrum. The earliest stage, gingivitis, involves red, swollen gums that bleed when you brush or floss. Ironically, mild gingivitis often causes little to no pain, which is why many people don’t catch it early. But if your gums are hurting badly enough that you searched for answers, the inflammation may have progressed further.
When gingivitis goes untreated, it can advance to periodontitis, a more serious infection that damages the tissue and bone holding your teeth in place. At this stage, gums can feel tender, throb, or ache persistently. You might notice your gums pulling away from your teeth, persistent bad breath, or teeth that feel slightly loose. Among adults 65 and older, nearly 60% have periodontitis, though it can develop at any age. The key difference between the two stages: gingivitis is fully reversible with good oral care, while periodontitis requires professional treatment and can cause permanent damage if ignored.
Signs That Point to an Abscess
If your gum pain is severe, constant, and throbbing, an abscess is a strong possibility. A gum abscess is a pocket of infection that forms either at the tip of a tooth root or along the gum line beside a tooth. The pain often radiates into your jaw, neck, or ear, and it tends to get worse when you chew or bite down. You might also notice swelling in your face or cheek, sensitivity to hot and cold, swollen lymph nodes under your jaw, or a foul taste in your mouth.
Abscesses don’t resolve on their own. If the pocket ruptures, you’ll get a sudden rush of bad-tasting, salty fluid and temporary pain relief, but the infection is still there. Fever combined with facial swelling is a red flag that the infection may be spreading. Difficulty breathing or swallowing means the infection has potentially reached your throat or neck, and that warrants an emergency room visit.
Brushing Too Hard Can Cause Real Damage
This one catches people off guard. Aggressive brushing or using a hard-bristled toothbrush wears away gum tissue over time, causing the gums to recede and expose the sensitive root surfaces of your teeth. The result is pain near the gum line, especially when eating hot, cold, or sweet foods, and discomfort during brushing and flossing. You might also notice that certain teeth look longer than they used to, which is exposed root becoming visible as the gum pulls back.
Switching to a soft-bristled toothbrush and using gentle, short strokes rather than scrubbing back and forth is the simplest fix. Once gum tissue has receded significantly, though, it doesn’t grow back on its own. A dentist can measure the extent of recession and recommend treatment if needed.
Hormonal Changes During Pregnancy and Menopause
Rising levels of estrogen and progesterone during pregnancy increase blood flow to the gums, which makes them more prone to swelling, soreness, and bleeding. These hormones also change how your body reacts to plaque, the sticky bacterial film on your teeth. Plaque that your gums tolerated before pregnancy can suddenly trigger a strong inflammatory response. Pregnancy gingivitis typically develops in the second trimester and affects a large percentage of pregnant people.
Menopause and the hormonal shifts of your menstrual cycle can cause similar flare-ups. If your gum pain seems to come and go with your cycle, or if it started during pregnancy, hormones are a likely contributing factor.
Medications That Cause Gum Overgrowth
Certain prescription drugs cause gums to swell and grow over your teeth, a condition called gingival overgrowth. The three main drug categories responsible are seizure medications, blood pressure medications, and immune-suppressing drugs used after organ transplants.
- Seizure medications: Phenytoin is the most well-known offender. Roughly half of the 2 million people taking it develop some degree of gum overgrowth. Other seizure drugs including carbamazepine and valproic acid can do the same.
- Blood pressure medications (calcium channel blockers): Nifedipine causes gum overgrowth in about 38% of users. Diltiazem affects around 20%, and amlodipine around 3%.
- Immune-suppressing drugs: Cyclosporine, commonly used after transplants, causes overgrowth in 13 to 85% of patients depending on the study.
If you started a new medication and noticed your gums becoming puffy, tender, or growing over your teeth, talk to your prescribing doctor. Switching to an alternative drug often resolves the problem, though it can take time for the tissue to return to normal.
Vitamin C Deficiency and Gum Pain
Vitamin C is essential for maintaining healthy connective tissue, including your gums. When levels drop low enough, gums become swollen, spongy, and purple, and they bleed easily. In severe cases, teeth can loosen and fall out. This is scurvy, and while it sounds like something from centuries past, it still occurs in people with very limited diets, those with absorption issues, heavy smokers, and people dealing with alcohol use disorder.
Adults need 75 to 90 mg of vitamin C daily (more if you smoke or are pregnant). A single orange provides about that amount. If a deficiency is the cause, gum symptoms can take weeks to months to fully resolve even after you start getting enough vitamin C, and severe gum disease from prolonged deficiency may cause permanent damage.
Necrotizing Gingivitis: Intense Pain With Foul Breath
Necrotizing ulcerative gingivitis, sometimes called trench mouth, is a painful infection that destroys gum tissue. It’s distinct from ordinary gum disease in its intensity. The gums are acutely painful, bleed heavily, and the tissue between teeth can develop crater-like ulcers. Swallowing and even talking may hurt. One hallmark is overwhelmingly foul breath, though this isn’t always present.
This condition tends to show up in people who are under severe stress, malnourished, sleep-deprived, or immunocompromised. It requires professional treatment quickly. Unlike standard gingivitis, it won’t improve with better brushing alone.
What You Can Do Right Now
While you figure out the underlying cause, a warm salt water rinse can help reduce inflammation and keep the area clean. Mix half a teaspoon of salt into a cup of warm water and swish gently for 30 seconds before spitting. You can repeat this a few times a day.
Beyond that, switch to a soft-bristled toothbrush if you haven’t already, and brush gently along the gum line rather than scrubbing. Floss daily but ease in carefully around areas that are painful. Over-the-counter pain relievers can take the edge off while you wait for a dental appointment. Avoid very hot, very cold, or acidic foods and drinks, which tend to aggravate irritated gums.
If your pain is severe and throbbing, if you have fever or facial swelling, or if your gums are visibly pulling away from your teeth, those are signs that home care alone won’t be enough. The sooner an infection or advancing gum disease gets treated, the less permanent damage it causes.