This condition may also cause swelling, burning, itching, or a grainy sensation when introducing foreign objects or substances to the eye.

Other conditions may give rise to blepharitis, whether they be infectious or noninfectious, including, but not limited to, bacterial infections or allergies.

[3][4][5] Symptoms include inflammation, irritation, itchiness, a burning sensation, excessive tearing, and crusting and sticking of eyelids.

Symptoms are generally worse in the mornings and patients may experience exacerbation and several remissions if left untreated.

The parasites (both adult and eggs) live on the hair follicle, inhabiting the sebaceous and apocrine gland of the human lid.

Factors that allow this pathogen to multiply include hypervascular tissue, poor hygienic conditions, and immune deficiency.

In treating blepharitis caused by D. folliculorum, mechanical cleaning and proper hygiene are important towards decreasing the parasite's numbers.

[6] Chronic blepharitis may result in damage of varying severity and, in the worst cases, may have a negative effect on vision.

[1] The mechanism by which the bacteria causes symptoms of blepharitis is not fully understood and may include direct irritation of bacterial toxins and/or enhanced cell-mediated immunity to S. aureus.

[14] In a study of ocular flora, 46% to 51% of those diagnosed with staphylococcal blepharitis had cultures positive for Staphylococcus aureus in comparison to 8% of normal patients.

The prevalence of S. aureus in the conjunctival sac and on the lid margin varies among countries, likely due to differences in climate and environment.

[17][5] In all forms of blepharitis, optometrists or ophthalmologists examine the tear film, which is the most efficient method in determining instability.

[19] Impetigo (due to Staphylococcus aureus) Molluscum contagiosum Varicella zoster virus Papillomavirus Vaccinia Contact dermatitis Erythema multiforme Crohn's disease Erythroderma Pyogenic granuloma Mycosis fungoides Basal cell carcinoma Radiation Surgical Thermal Blepharitis is a result of bacteria and inflammation from congested meibomian oil glands at the base of each eyelash.

Washing each eyelid for 30 seconds, twice a day, with a single drop of hypoallergenic soap (e.g. baby shampoo) and ample water can help.

[2] A Cochrane Systematic Review found topical antibiotics to be effective in providing symptomatic relief and clearing bacteria for individuals with anterior blepharitis.

Infrequently, severe blepharitis can result in permanent alterations in the eyelid margin or vision loss from superficial keratopathy, corneal neovascularization, and ulceration.

Results indicated that hyperlipidaemia and coronary artery disease were significantly correlated with the prior development of blepharitis.

According to very low certainty data, oral doxycycline may help with symptoms like itchiness, burning, or watery eyes, but may induce more side effects.