A sinus infection feels like heavy, painful pressure building behind your face, concentrated around your forehead, eyes, and cheekbones. Along with that pressure comes thick nasal congestion, a dull ache that worsens when you bend forward, and an overall feeling of being run down. Most sinus infections start as a cold that simply won’t quit, and the combination of facial pain, congestion, and fatigue is distinct enough that most people can tell something has shifted beyond a regular stuffy nose.
Where the Pressure Builds
The specific location of your pain depends on which sinus cavities are inflamed. Your frontal sinuses sit in the lower part of your forehead, near the innermost edges of your eyebrows. When these are affected, you’ll feel a deep ache across your forehead that can radiate down toward your eyes. Your maxillary sinuses are just beneath your eyes, behind your cheekbones on each side of your face. Inflammation here creates a swollen, tender feeling across your mid-face, almost like someone is pressing firmly on your cheeks from the inside.
There are also smaller sinuses between your eyes and behind your nose. When these are involved, you may feel pressure deep between your eyes or at the bridge of your nose. The pain is usually dull and constant rather than sharp, though it can intensify when you lean forward, lie down, or make sudden head movements. Many people describe it as a heaviness, as if their face is waterlogged.
Pain That Shows Up in Unexpected Places
One of the more surprising sensations is tooth pain. Your largest sinuses sit directly above the roots of your upper back teeth, and in some people the tooth roots actually extend into the sinus cavity. When those sinuses swell, the pressure pushes against those roots, creating what feels like a toothache. Pain in the upper back teeth is a fairly common symptom with sinus conditions, and it’s not unusual for people to visit a dentist before realizing the real problem is in their sinuses.
Ear pressure and fullness are also common. The sinuses, nasal passages, and ears share drainage pathways, so inflammation in one area often backs up into others. You may notice muffled hearing, a plugged sensation, or a dull ache in one or both ears.
What the Congestion Feels Like
Sinus infection congestion is thicker and more stubborn than what you get with a typical cold. Inflamed tissues inside your nose slow the flow of mucus, causing it to lose moisture and become dense and cloudy. The discharge often turns yellow or green, though color alone doesn’t tell you whether the infection is viral or bacterial. What matters more is how long you’ve been sick and how you feel overall.
Along with the stuffiness, you’ll likely notice a reduced or completely absent sense of smell, and food may taste flat. Breathing through your nose becomes difficult or impossible, which can leave your mouth dry and your throat irritated, especially overnight.
The Drip Down Your Throat
Post-nasal drip is one of the most persistent and annoying parts of a sinus infection. Mucus that can’t drain forward through your nose slides down the back of your throat instead. You may feel a constant tickle or a lump-like sensation in the back of your throat, along with a frequent urge to swallow or clear your throat. Your voice may become hoarse or sound gurgled.
This drainage triggers a cough that tends to get worse at night, when lying flat lets gravity pull more mucus toward your throat. The combination of post-nasal drip, coughing, and mouth-breathing can also cause a sore throat, bad breath, and a foul taste in your mouth.
Fatigue and Feeling “Off”
A sinus infection doesn’t just affect your face. Most people feel genuinely wiped out. Fatigue, weakness, and a general sense of sluggishness are common, partly because your body is fighting an infection and partly because congestion disrupts your sleep. Some people describe a foggy, hard-to-concentrate feeling during the day. With acute sinus infections, a low-grade fever can develop, though high fevers are uncommon. Chronic sinus infections rarely cause fever at all.
How It Differs From a Cold or Allergies
Colds, allergies, and sinus infections overlap enough that telling them apart can be tricky, but there are reliable patterns. A cold develops over several days, brings a sore throat and body aches early on, and generally clears up within a week. Allergies start shortly after you’re exposed to a trigger, feature itchy and watery eyes as a hallmark, and last as long as the exposure does.
A sinus infection typically emerges after a cold has lingered. The key markers are that swollen, painful feeling around your forehead, eyes, and cheekbones combined with thick, colored mucus, bad breath, and a cough. If your stuffy nose and cough have lasted longer than one to two weeks without improving, that timeline alone points toward sinusitis rather than a cold that’s hanging around.
Acute vs. Chronic: How the Experience Differs
Acute sinusitis hits harder but resolves faster. The facial pain is more intense, you’re more likely to run a fever, and the whole episode usually wraps up within four weeks. Most cases are caused by viruses and get better on their own without antibiotics. The CDC recommends seeing a provider if symptoms last more than 10 days without improvement, since that’s when a bacterial infection becomes more likely and antibiotics may help.
Chronic sinusitis is a lower-grade version of the same misery, but it lasts at least 12 weeks. The facial pressure is still there, though it tends to be milder. The congestion, post-nasal drip, and fatigue become a daily background hum rather than an acute crisis. Many people with chronic sinusitis have repeated bouts of the acute form before the condition settles into something persistent.
Symptoms That Need Immediate Attention
In rare cases, a sinus infection can spread to surrounding structures, including the eye socket or the brain. Swelling, redness, or pain around one eye is a red flag, especially if the eye starts to bulge or your vision becomes blurry or doubled. A stiff neck, high fever, confusion, or a severe headache that feels different from typical sinus pressure also warrant urgent evaluation. Adolescents with frontal sinusitis and a bad headache are a particular concern, as Johns Hopkins specialists have noted that these patients can harbor unrecognized intracranial infections that look deceptively mild at first.