Blepharitis
Symptoms, Causes & Treatment
Understanding blepharitis: what causes it, why it is a lifelong condition, and the daily lid hygiene routine that effectively controls symptoms long term.
What Is Blepharitis?
Blepharitis is chronic inflammation of the eyelid margins. It is one of the most common eye conditions in the UK, affecting up to 40% of adults attending eye clinics. It is a long-term condition that requires consistent daily management rather than cure.
Blepharitis is caused by either anterior inflammation from Staphylococcus aureus or Demodex mites at the lash base, or posterior meibomian gland dysfunction (MGD), or both. It is strongly associated with rosacea and dry eye disease.
Blepharitis cannot be cured but is very effectively managed with a daily warm compress, lid massage, and lid cleaning routine. Stopping treatment leads to rapid relapse.
What Are the Symptoms of Blepharitis?
Blepharitis symptoms are typically bilateral, chronic, and worst in the morning. They frequently overlap with dry eye disease.
Eyelid margin redness, swelling, and scaling · Crusting and flaking at the base of lashes · Burning, itching, or gritty sensation · Watering eyes · Loss of eyelashes · Meibomian gland dysfunction (oily lid margin) · Frequently associated with dry eyes
Blepharitis with corneal involvement (keratitis) causing pain and vision change · Severe stye (hordeolum) forming an abscess · Blepharitis not responding to treatment in immunocompromised patients
Blepharitis with sudden onset eye pain, significant redness, reduced vision, or photophobia requires A&E assessment to exclude keratitis or corneal ulcer. These are not typical blepharitis symptoms.
What Causes Blepharitis?
Blepharitis has two main types: anterior (lid margin, Staph-related) and posterior (meibomian gland disease). Many patients have both. Accurate classification guides treatment.
Blepharitis is a chronic condition caused by Staph aureus infection of lid margins, seborrhoeic dermatitis, or meibomian gland dysfunction. It is the most common eye condition seen in primary care and often coexists with dry eye.
Age-related macular degeneration (AMD) affects central vision. Wet AMD causes rapid central vision loss from neovascularisation and requires emergency anti-VEGF injection. Dry AMD progresses slowly.
Acute angle-closure glaucoma causes sudden severe eye pain, nausea, red eye, and halos around lights. It is caused by sudden blockage of aqueous drainage. This is an ocular emergency requiring immediate ophthalmology treatment.
Cataracts cause gradual clouding of the lens, producing progressive blurring, glare, and halos. Cataract extraction is the most commonly performed surgical procedure in the UK and is highly effective.
Uveitis is inflammation of the uveal tract (iris, ciliary body, choroid). It presents with eye pain, photophobia, and circumcorneal injection. It is associated with HLA-B27 conditions including ankylosing spondylitis.
Dry eye disease affects 5–15% of adults and occurs when tears evaporate too quickly (evaporative dry eye from meibomian gland dysfunction) or are produced in insufficient quantity (aqueous deficiency). Both cause ocular surface damage.
Key Risk Factors
How Is Blepharitis Diagnosed?
Blepharitis is diagnosed clinically by lid margin examination: telangiectasia, meibomian gland plugging, crusting at lash bases, and corneal staining in severe cases. Demodex infestation is confirmed by examining epilated lashes under microscopy.
How Is Blepharitis Treated?
Lid hygiene is the foundation. Antibiotics (topical or oral) are added for flares. Demodex requires specific anti-parasitic treatment. Rosacea-associated blepharitis responds to oral doxycycline.
Supportive Measures
Apply warm compress (heated eye mask) to closed eyelids for 2 minutes. Massage lids toward lash margin to express meibomian secretions. Clean lid margins with specific lid wipes or cotton bud dipped in diluted baby shampoo. Repeat twice daily. Use preservative-free artificial tears to manage associated dry eye.
Long-Term Blepharitis Management
Blepharitis is a chronic relapsing condition. Once a maintenance routine is established, most patients achieve excellent symptom control. Demodex-related blepharitis requires specific anti-Demodex treatment (tea tree oil wipes, ivermectin). Rosacea-associated blepharitis benefits from oral doxycycline. IPL therapy provides significant long-term improvement in meibomian gland disease.
When Should You Seek Medical Advice for Blepharitis?
Blepharitis with severe eye pain, marked redness, reduced vision, or photophobia suggests corneal ulcer or keratitis — attend A&E immediately.
Blepharitis is causing significant eye discomfort or visual symptoms · You have failed a course of lid hygiene · You need prescription antibiotic treatment · You have associated rosacea and would benefit from oral doxycycline.
How Can You Control Blepharitis?
Blepharitis cannot be prevented, but complications and flares can be significantly reduced with consistent lid hygiene.
All diabetics should attend annual NHS diabetic eye screening (dilated fundal photography) to detect diabetic retinopathy before it causes irreversible vision loss. This is free and highly effective.
Never sleep in contact lenses. Clean lenses strictly as directed. Replace on schedule. Use sterile solution, not tap water. Contact lens keratitis can cause permanent vision loss within 24 hours.
Warm compresses applied to closed eyelids for 2 minutes twice daily improve meibomian gland function, reduce dry eye symptoms, and prevent blepharitis flares. This should become a daily habit.
Attend regular NHS sight tests (free every 2 years on the NHS, more frequently if you are diabetic, over 60, or have glaucoma in the family). Eye tests detect glaucoma, retinal disease, and AMD before symptoms appear.
Wear UV400-protective sunglasses outdoors. UV exposure increases the risk of cataracts and AMD. Polarised lenses do not provide additional UV protection unless UV400-rated.
Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds. Use artificial tears for screen-related dry eye. Increase screen font size to reduce eye strain.
Speak to a Clinician About Blepharitis
Through The GP Service, a clinician can assess blepharitis, prescribe appropriate topical or oral antibiotics, and advise on the lid hygiene routine that provides lasting control.
Expert clinical advice, when you need it.
Blepharitis FAQs
Blepharitis is a chronic condition and cannot be cured, but it can be very effectively managed with a consistent daily eyelid hygiene routine. Stopping treatment typically leads to relapse within weeks. Long-term maintenance is the key.
Apply a warm compress (heated eye bag or warm flannel) to closed eyelids for 2 minutes. Then massage the eyelids gently toward the lash margin to express meibomian secretions. Then clean the lid margin with a cotton bud or lid wipe. Repeat twice daily.
Demodex blepharitis is caused by Demodex mite infestation of the hair follicles and lash roots. It is treated with tea tree oil-based lid wipes (CLIRADEX) and, in severe cases, oral ivermectin. It is more common in older adults and rosacea patients.
Blepharitis is associated with dry eye disease in up to 50% of patients. Meibomian gland dysfunction (MGD) — the most common cause of dry eye — and blepharitis are closely linked and often treated together.
Topical antibiotics (chloramphenicol or fusidic acid ointment) may be prescribed for acute bacterial blepharitis. Oral doxycycline or azithromycin is used for posterior blepharitis (meibomian gland disease) and rosacea-associated blepharitis.
Yes. Blepharitis can cause recurrent chalazia (blocked meibomian glands forming cysts), conjunctivitis, corneal inflammation, and in severe long-standing cases, corneal scarring. Consistent treatment prevents these complications.
Rosacea is strongly associated with blepharitis. Ocular rosacea causes meibomian gland dysfunction, lid margin inflammation, and dry eye. Both are treated with oral doxycycline and lid hygiene. Managing one condition improves the other.
IPL (Intense Pulsed Light) therapy treats Demodex and meibomian gland dysfunction by heating and expressing glands and reducing Demodex mite load. It provides significant relief for refractory blepharitis and dry eye. Multiple sessions are usually required.