Skip to content

Why is my cheek swollen under my eye? Unpacking the potential causes

4 min read

According to dermatologists, localized facial swelling is a common complaint with many potential culprits, from a mild allergic reaction to a serious underlying condition. If you find yourself asking, "Why is my cheek swollen under my eye?", understanding the source is the first step toward finding relief.

Quick Summary

Swelling in the cheek directly below the eye can stem from a variety of causes, including mild issues like allergies or sleep-related fluid retention, as well as more serious problems such as a tooth abscess, sinus infection, or a skin condition called cellulitis. The accompanying symptoms often provide key clues to the root of the problem and the best course of action.

Key Points

  • Allergies Are Common Culprits: Allergic reactions, including hay fever and contact dermatitis, frequently cause facial swelling due to fluid retention.

  • Infections Demand Attention: A tooth abscess or sinus infection can lead to localized swelling under the eye and require medical or dental treatment.

  • Cellulitis is a Medical Emergency: Rapidly spreading, red, and painful swelling accompanied by fever could be cellulitis, a serious skin infection.

  • Age and Lifestyle Play a Role: Chronic swelling, such as malar bags, can be related to aging, while lifestyle factors like high sodium and poor sleep can worsen temporary puffiness.

  • Severe Symptoms Warrant a Doctor's Visit: If swelling is painful, warm, or accompanied by fever, headache, or vision changes, seek professional medical advice immediately.

In This Article

Understanding Facial Swelling

Facial swelling, or facial edema, occurs when fluid or inflamed tissue accumulates in the face. The area under the eye is particularly susceptible due to the thin, delicate skin and the underlying structures like sinuses and teeth. When the swelling is localized to the cheek just below the eye, it can often point toward a specific anatomical issue. While some causes are minor and resolve on their own, others require immediate medical attention. It's crucial to pay attention to other symptoms to determine the severity.

Common Causes of Swelling

Allergies and Allergic Reactions

Allergic reactions are a very common cause of swelling around the eyes and cheeks. Exposure to an allergen triggers the release of histamines, which cause blood vessels to leak fluid into the surrounding tissues.

  • Seasonal Allergies (Hay Fever): Pollen, dust mites, and pet dander can all trigger allergic conjunctivitis and swelling around the eyes.
  • Contact Dermatitis: This occurs when the skin reacts to something it has touched, such as certain cosmetics, skincare products, or even airborne particles.
  • Food or Drug Allergies: While severe reactions can cause life-threatening anaphylaxis, milder food or drug allergies can still cause noticeable facial swelling.

Infections

Infections in nearby areas are a significant cause of inflammation and swelling that can extend to the cheek under the eye.

  • Dental Abscess: An infection at the root of a tooth can cause a painful pocket of pus. This swelling often begins in the jaw or gums but can track upward into the cheek and under the eye, accompanied by tooth pain.
  • Sinusitis: An infection or inflammation of the sinuses, known as sinusitis, can cause pressure and swelling around the eyes and cheeks. This is often accompanied by nasal congestion, headache, and fatigue.
  • Cellulitis: A serious bacterial infection of the skin and underlying tissue, cellulitis can develop suddenly and spread quickly. It causes red, warm, and tender swelling that requires prompt medical treatment with antibiotics.

Lifestyle and Age-Related Factors

Some cases of under-eye and cheek puffiness are not due to infection but to lifestyle habits or natural changes over time.

  • Poor Sleep and Fluid Retention: Lack of sleep can disrupt the body's fluid balance, leading to pooling in the face, especially upon waking. High sodium intake, alcohol consumption, and dehydration can all exacerbate fluid retention.
  • Aging (Malar Bags and Festoons): Over time, weakened facial muscles and loose skin can lead to the formation of malar bags (swelling on the cheekbone) or festoons (fluid-filled folds of skin under the eyes). This is primarily a cosmetic concern but can be quite noticeable.

Injuries and Trauma

Direct trauma to the face can cause immediate and significant swelling.

  • Facial Injury: A blow to the cheek, nose, or eye can lead to bruising and swelling in the area. The severity of the swelling depends on the impact.
  • Insect Bites: Bites or stings from insects like mosquitoes or bees near the eye can cause a localized inflammatory reaction and swelling.

A Closer Look at the Causes

Here is a comparison of some of the most common causes of cheek swelling under the eye:

Cause Key Symptoms Treatment When to Seek Care
Allergies Itchiness, sneezing, watery eyes Antihistamines, avoiding allergens If swelling is severe or breathing difficulties occur
Dental Abscess Severe toothache, sensitivity to hot/cold Antibiotics, dental work Immediately, to prevent infection from spreading
Sinusitis Nasal congestion, headache, facial pressure Decongestants, antibiotics If symptoms worsen or fever develops
Cellulitis Red, warm, painful swelling; fever Prescription antibiotics Immediately, this is a medical emergency
Malar Bags Chronic puffiness on the cheekbone Lifestyle changes, cosmetic procedures If it significantly bothers you cosmetically

What You Can Do at Home

For mild swelling not accompanied by severe symptoms, you can try some at-home remedies:

  1. Use a Cool Compress: Gently apply a cool, damp cloth to the swollen area for 10-15 minutes at a time to reduce inflammation.
  2. Elevate Your Head: Sleep with your head propped up on an extra pillow to prevent fluid from pooling in your face overnight.
  3. Reduce Sodium Intake: Minimize consumption of processed foods high in salt, as this can contribute to fluid retention.
  4. Stay Hydrated: Drinking plenty of water helps your body flush out toxins and balance fluid levels.
  5. Identify Allergens: If you suspect allergies, track your exposure to potential triggers and consider over-the-counter antihistamines.

When to Seek Medical Attention

While many causes are benign, certain symptoms require a professional medical evaluation to rule out serious conditions. See a doctor if you experience any of the following:

  • The swelling is getting progressively worse or is accompanied by severe pain.
  • You have a fever, chills, or headache.
  • The swollen area is red and feels warm to the touch.
  • You experience changes in vision, such as blurriness or double vision.
  • You have a severe toothache in addition to the facial swelling.
  • The swelling is associated with difficulty breathing or swallowing.

Conclusion

Swelling in the cheek under the eye can be a puzzling and sometimes concerning symptom. Whether it's a minor reaction to a seasonal allergen or a sign of a more serious infection like cellulitis or a dental abscess, understanding the possible causes is essential for appropriate care. While home remedies can help with minor cases, paying close attention to the accompanying symptoms is vital. If you experience severe symptoms or are unsure of the cause, always consult a healthcare professional to ensure proper diagnosis and treatment. For more comprehensive information on facial swelling, consider consulting an authoritative medical source such as the Cleveland Clinic.

Frequently Asked Questions

Yes, a dental abscess can cause a painful infection that spreads from the tooth root into the surrounding tissues, causing swelling that can extend to your cheek and under your eye.

Yes, allergies are a very common cause. When your body reacts to an allergen, it releases histamines that can cause fluid retention and swelling around the delicate eye and cheek area.

Malar bags are more prominent, chronic swellings that sit higher on the cheekbones, often caused by weakened facial muscles and fluid buildup with age. Regular puffiness is typically temporary and related to sleep, diet, or allergies.

Seek medical attention if the swelling is sudden, severe, painful, warm, red, or if you have a fever, headache, or blurry vision. These could be signs of a serious infection.

For mild cases, applying a cool compress, elevating your head while sleeping, and reducing high-sodium foods can help decrease puffiness. However, these are not substitutes for medical treatment if an infection is present.

Yes. The sinuses are located near the eyes and cheeks. An infection in these cavities can cause significant pressure and swelling in the mid-face region.

Yes, cellulitis is a serious bacterial skin infection that can present as a red, warm, and swollen area on the face. It requires immediate antibiotic treatment and can be dangerous if left untreated.

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.