Symptoms
Both blepharitis and styes can cause painful swelling or inflammation of your eyelid. While these two conditions share some symptoms, there are some clear differences.
While both conditions can cause redness, pain, and swelling, the key difference is that blepharitis typically develops along the entire eyelid. A stye, on the other hand, develops as a single lump or nodule on a particular oil or sweat gland along the eyelid.
Causes
Staphylococcus aureus bacteria are a common cause of both blepharitis and styes. They can also both be caused by blockages in the glands along the eyelid.
Blepharitis
Blepharitis can be caused by bacteria and blocked oil glands on the eyelid, but there are other problems that can contribute to this condition. These include:
Bacteria Rosacea (skin condition causing blushing or flushing) Allergies Dandruff (flaky skin on the scalp) Flaky skin Seborrheic dermatitis (skin condition causing scaly patches, red skin, and flakes) Meibomian gland dysfunction (MGD, blocked oil glands) Mites (refers to a group of insect-like small arachnids) Lice (tiny wingless parasites) Dry eyes
Stye
There are not as many causes of styes, but a number of nonspecific issues can lead to the blockages that form styes. Common causes of styes include:
Bacteria Blocked oil or sweat glands Rosacea Seborrheic dermatitis Diabetes Dry skin Hormonal changes High cholesterol Contact lenses Contaminated eyes drops or cosmetics
Diagnosis
Diagnosis of blepharitis and styes is done after a close physical examination of the eye. Your doctor may use bright lights or a magnifier.
Cultures, or samples of discharge, may be taken to identify the bacteria causing the conditions.
Treatment
If your doctor thinks your blepharitis or stye was caused by bacteria, they will probably prescribe antibiotic eye drops or ointment. Beyond that, there are subtle differences in how these conditions are managed.
Blepharitis
Blepharitis can be acute (sudden onset) or chronic (long lasting), and finding out which applies in your case can help you treat the inflammation. While acute blepharitis usually involves a new bacterial infection that can be treated with antibiotics, blepharitis can also be caused by flare-ups of a chronic version of this condition.
Chronic blepharitis is common in people with oily skin, or conditions that create skin flakes like dandruff or seborrheic dermatitis. Treatments may include:
Controlling the underlying conditions Using warm compresses Massaging the affected eyelid Cleaning your eyelid regularly with warm water and mild soap Using steroid eye drops
Stye
While treatments for styes may also include antibiotic eye drops or ointments, there are some differences in how this condition is managed. First, warm compresses should be used multiple times throughout the day to help clear the gland where the blockage is and the mass has formed. You don’t want to massage or rub a stye, and you should never squeeze a stye.
In severe cases, your doctor may have to treat your stye with a steroid injection or by making an incision to drain the stye.
Prevention
Keeping your eyes clean is key to preventing both blepharitis and styes. Try to avoid oil and dirt buildup in and around your eyes. Practice good eye hygiene by cleaning your eyes gently and regularly, and be sure to replace contacts, eye drops, and cosmetics as recommended by their manufacturers to avoid contaminating your eye.
Summary
Blepharitis and styes can both cause inflammation and be caused by blocked glands along the eyelid or bacteria. Where they differ is in how they look—blepharitis causes inflammation all around the eyelid, whereas a stye presents as a pimple-like mass. Avoid massaging or squeezing a stye. Styes can develop again and aren’t usually chronic, unlike blepharitis, which can be a chronic condition.
A Word From Verywell
Eyelids are delicate, and even the smallest particle in your eye can be irritating. Your doctor can prescribe eye drops for either blepharitis or styes, but warm compresses and good hygiene are the best and most immediate ways to treat these conditions before they become severe.
