What Is Blepharitis?

Blepharitis is classified by which part of the eyelid is inflamed. Understanding which type you have helps guide the right treatment approach. Anterior blepharitis affects the outside front edge of the eyelid, where the eyelashes attach. It is usually caused by bacteria (staphylococcal blepharitis) or dandruff of the scalp and eyebrows (seborrheic blepharitis). Staphylococcal blepharitis can lead to missing or misdirected eyelashes, while seborrheic blepharitis produces greasy, dandruff-like flakes along the lashes that can be quite noticeable. Posterior blepharitis affects the inner edge of the eyelid that contacts the eye. It is most often caused by dysfunction of the meibomian glands — the tiny oil glands along the rim of the eyelids. When these glands become blocked or produce abnormal oil, it leads to inflammation and dry eye symptoms. This type is strongly associated with rosacea and scalp dandruff. It is common to have both anterior and posterior blepharitis at the same time, which is why a comprehensive eye examination is important for determining the best treatment plan. Other specific types include:

• Demodex blepharitis: Caused by tiny mites that live in the eyelash follicles. It can cause chronic redness, itching, and irritation that may not respond well to standard hygiene measures alone.
• Ulcerative blepharitis: A more severe form where small, painful ulcers form along the eyelid margin. The crusts may bleed when removed and scarring can occur if not properly treated.

Blepharitis symptoms can vary from person to person and often come and go over time. The condition typically affects both eyes, though one may feel more irritated than the other. Common symptoms include:

• Itchy, irritated eyelids that feel uncomfortable throughout the day
• Redness and swelling along the eyelid margins
• A gritty or burning sensation, as if something is in the eye
• Flaky skin or crusts at the base of the eyelashes, similar to dandruff
• Eyelids that stick together, especially in the morning after waking up
• Excessive tearing or watery eyes, which can paradoxically occur alongside dry eyes
• Dry eyes or a feeling of dryness
• Sensitivity to light (photophobia)
• Frequent blinking or the urge to rub the eyes

More severe symptoms can include:

• Eyelashes falling out or growing in the wrong direction
• Changes in vision or blurry vision
• Swelling or inflammation of the cornea (keratitis)
• Small sores or ulcers along the eyelid edge

Symptoms often flare up and then improve for a time before returning. Flare-ups can be triggered by stress, lack of sleep, certain weather conditions, prolonged screen use, or wearing eye makeup for extended periods. Recognizing your personal triggers can help you manage the condition more effectively.

Blepharitis develops when the eyelids become inflamed due to an overgrowth of bacteria, dysfunction of the oil glands, or other underlying skin conditions. In many cases, more than one factor contributes at the same time. Bacterial overgrowth is one of the most common causes. Bacteria that normally live on the skin, particularly Staphylococcus species, can multiply too quickly along the eyelid margin. This leads to inflammation and the formation of the crusts and flakes that characterize the condition. Meibomian gland dysfunction (MGD) occurs when the tiny oil glands along the rim of the eyelids become blocked or produce abnormal, thickened oil. Since these oils are an essential component of the tear film, MGD can also lead to evaporative dry eye disease — a common companion to blepharitis. Several skin conditions are closely linked to blepharitis:

• Seborrheic dermatitis (dandruff of the scalp, eyebrows, or face)
• Rosacea, a skin condition that causes facial redness, flushing, and visible blood vessels
• Eczema and other inflammatory skin conditions

Other contributing factors include:

• Demodex mites (tiny mites that live in eyelash follicles)
• Allergies to eye makeup, contact lens solutions, or skincare products
• Poor eyelid hygiene or infrequent cleaning of the lid margins
• Overuse or improper removal of eye makeup, especially mascara and eyeliner
• Contact lens wear, which can introduce bacteria and reduce oxygen to the cornea
• Hormonal changes, such as those occurring during menopause
• Dry environments, including air conditioning and heating that reduce humidity

Blepharitis is not contagious. You cannot catch it from someone else or spread it to others through contact, which is an important point to understand if you are concerned about passing it to family members or close contacts.

Blepharitis can often be diagnosed during a routine eye examination. Your doctor will begin by asking about your symptoms, including when they started, what makes them better or worse, and whether you have any associated skin conditions. The doctor will examine your eyelids, eyelashes, and the surface of your eyes using a magnifying device called a slit lamp. This allows them to see the eyelid margins closely and assess the health of the oil glands. During the exam, your doctor may:

• Look for redness, swelling, crusting, or flaking along the eyelid edges
• Check the quality and quantity of your tears
• Examine the openings of the meibomian glands
• Gently press on the eyelids to see if the glands are producing oil normally
• Take a swab of the eyelid margin to test for bacteria or mites if an infection is suspected

In most cases, no additional testing is needed. If your symptoms are severe or do not respond to standard treatment, your doctor may refer you to an eye specialist (ophthalmologist) for further evaluation.

While blepharitis cannot always be prevented — especially if it is linked to an underlying skin condition — several habits can reduce your risk and help prevent flare-ups. Practice good eyelid hygiene. Gently cleaning your eyelids daily can prevent the buildup of bacteria and debris that contribute to inflammation. Even when you do not have symptoms, a regular cleansing routine can keep flare-ups at bay. Remove all eye makeup before bed. Sleeping with mascara, eyeliner, or eyeshadow on can clog the oil glands and eyelash follicles. Always use a gentle makeup remover and avoid sharing eye makeup with others. Replace eye makeup regularly. Mascara, eyeliner, and eyeshadow can become contaminated with bacteria over time. Replace eye products every three to six months, and never use old or expired products. Avoid using eyeliner on the inner rim of the eyelid behind the lashes, as this can block the oil glands. Wash your hands thoroughly before touching your eyes or applying any products. Avoid rubbing your eyes, as this can spread bacteria, aggravate inflammation, and damage the delicate eyelid tissues. Manage dandruff and skin conditions. If you have seborrheic dermatitis or rosacea, treating these conditions can also help control blepharitis. Medicated shampoos, skincare routines, and prescription treatments may be recommended. Take breaks from contact lenses. During flare-ups, switching to glasses can reduce irritation. Consider omega-3 supplements. Some evidence suggests that omega-3 fatty acids may improve the quality of the oil produced by the meibomian glands and reduce inflammation throughout the body, which can be especially helpful for those with underlying inflammatory skin conditions.

Blepharitis is a chronic condition for most people, meaning it tends to come and go over time rather than disappear permanently. However, with consistent management, the vast majority of people can keep their symptoms well controlled. The key to a good outlook is establishing a daily eyelid hygiene routine and sticking with it even when symptoms are not present. People who maintain this routine typically experience fewer and less severe flare-ups. When symptoms do flare up, starting treatment early — usually with warm compresses and gentle lid cleansing — can shorten the duration and prevent complications. If left untreated, blepharitis can lead to several complications:

• Styes (infected lumps on the eyelid)
• Chalazia (blocked oil gland cysts)
• Chronic dry eye
• Conjunctivitis (pink eye)
• Eyelash loss or abnormal lash growth
• Scarring of the eyelid margin
• Corneal inflammation or ulcers (in severe cases)

These complications are uncommon when blepharitis is properly managed. Most people with blepharitis experience it as a manageable, chronic condition that requires ongoing attention but does not threaten their vision or overall health when properly controlled.

Treatment for blepharitis focuses on controlling inflammation, keeping the eyelids clean, and managing any underlying causes. Most cases can be managed with self-care, but persistent or severe symptoms may require medical treatment. Daily eyelid hygiene is the cornerstone of treatment:

• Apply a warm compress to closed eyelids for 5 to 10 minutes. This helps soften crusts, loosen debris, and warm the oil in the meibomian glands so it can flow more freely.
• After the compress, gently massage the eyelids for about 30 seconds to help express clogged oil from the glands.
• Clean the eyelid margins using a diluted solution of baby shampoo and warm water, or an over-the-counter eyelid cleansing product. Use a clean cotton swab or washcloth and gently wipe along the base of the eyelashes.
• Rinse thoroughly with warm water and pat dry.

Medical treatments may be needed when hygiene alone is not enough:

• Antibiotic ointments, drops, or oral medications if a bacterial infection is present. Common options include erythromycin or bacitracin ointment.
• Medicated eye drops such as lotilaner (Xdemvy), which targets Demodex mites.
• Artificial tears or lubricating eye drops to relieve dryness.
• Steroid eye drops or ointments for short-term use to reduce significant inflammation.
• Omega-3 supplements may be recommended to improve oil gland function and reduce inflammation.

Advanced treatments for stubborn cases:

• Microblepharoexfoliation: A procedure that uses a special device to gently exfoliate the eyelid margins and remove debris and biofilm.
• Intense pulsed light (IPL) therapy: Light energy is applied to the eyelid skin to break down blockages in the meibomian glands.
• Thermal pulsation: A device delivers controlled heat and pressure to the eyelids to open blocked glands.

Always see a doctor before starting treatment, especially if you are unsure of the cause of your symptoms or if you have tried hygiene measures without success. Continue your hygiene routine consistently even after your symptoms improve, as this is the most important factor in preventing recurrence and keeping your symptoms under control long term.

While diet alone cannot cure blepharitis, what you eat can influence inflammation throughout your body and may support the health of your oil glands. Omega-3 fatty acids are particularly relevant for blepharitis. They help reduce inflammation and may improve the quality of the oil produced by the meibomian glands in the eyelids. Good food sources include:

• Fatty fish such as salmon, mackerel, sardines, and trout
• Flaxseeds and ground flaxseed oil
• Chia seeds
• Walnuts
• Hemp seeds

Some people take fish oil or algae-based omega-3 supplements, which have been shown in some studies to improve symptoms of dry eye and meibomian gland dysfunction. A diet rich in anti-inflammatory foods may also help reduce the severity of blepharitis flare-ups:

• Fruits and vegetables provide antioxidants that help protect cells from inflammation
• Leafy greens, berries, and colorful vegetables are especially beneficial
• Whole grains provide fiber and support a healthy inflammatory response

Staying hydrated is important for maintaining healthy tear production. Dehydration can worsen dry eye symptoms that often accompany blepharitis. If you have seborrheic dermatitis or rosacea as underlying conditions, certain dietary triggers may worsen those conditions and indirectly affect blepharitis. Common triggers include spicy foods, alcohol, and hot beverages for rosacea. A food diary can help identify any personal triggers.

Blepharitis is a common, chronic inflammatory condition affecting the eyelids that affects an estimated 15 to 25 percent of people at some point in their lives. It occurs when the oil glands at the base of the eyelashes become blocked or when bacteria or skin conditions cause irritation along the eyelid margins. Symptoms include redness, itching, a gritty or burning sensation, crusting along the lashes, and eyelids that may stick together upon waking. While blepharitis is not contagious and rarely threatens vision, it can be uncomfortable and persistent without proper care. Diagnosis is made through a simple eye examination, often using a magnifying slit lamp to assess the eyelids and oil glands. Treatment centers on daily eyelid hygiene — warm compresses followed by gentle cleansing of the eyelid margins — which is the single most important step for managing the condition. Medicated drops, antibiotic ointments, or advanced in-office procedures such as thermal pulsation or intense pulsed light therapy may be needed for more stubborn cases. Underlying conditions such as dandruff, rosacea, or dry eye disease should also be identified and managed as part of a comprehensive treatment plan. With consistent care and attention to daily hygiene, most people can effectively control their symptoms, reduce the frequency and severity of flare-ups, and maintain comfortable, healthy eyes.