Blepharitis

blephartiseyelidsgranulation of the eyelids
Blepharitis is one of the most common ocular conditions characterized by inflammation, scaling, reddening, and crusting of the eyelid.wikipedia
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Eyelash

eyelashesciliaryeyelashes,
Blepharitis is characterized by chronic inflammation of the eyelid, usually at the base of the eyelashes.
Blepharitis is the irritation of the lid margin, where eyelashes join the eyelid. The eyelids are red and itching, the skin often becomes flaky, and the eyelashes may fall out.

Photophobia

photophobicsensitivity to lightlight sensitivity
Additional symptoms may include visual impairment such as photophobia and blurred vision.
Blepharitis

Eyelid

eyelidspalpebralpalpebra
Blepharitis is characterized by chronic inflammation of the eyelid, usually at the base of the eyelashes. Blepharitis is one of the most common ocular conditions characterized by inflammation, scaling, reddening, and crusting of the eyelid.
Blepharitis is the irritation of the lid margin, where eyelashes join the eyelid. This is a common condition that causes inflammation of the eyelids and which is quite difficult to manage because it tends to recur. This condition is mainly caused by staphylococcus infection and scalp dandruff. Blepharitis symptoms include burning sensation, the feeling that there is something in the eye, excessive tearing, blurred vision, redness of the eye, light sensitivity, red and swollen eyelids, dry eye and sometimes crusting of the eyelashes on awakening. Treatment normally consists in maintaining a good hygiene of the eye and holding warm compresses on the affected eyelid to remove the crusts. Gently scrubbing the eyelid with the warm compress is recommended as it eases the healing process. In more serious cases, antibiotics may be prescribed.

Demodex

Demodex canisD. canisDemodex erminae
Diseases and conditions that may lead to blepharitis include: rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, demodicosis (Demodex), and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).
Blepharitis (inflammation of the eyelids) can be also caused by Demodex mites.

Chalazion

Chalazion cystmeibomian gland
Long-term untreated blepharitis can lead to eyelid scarring, excess tearing, difficulty wearing contact lenses, development of a stye (an infection near the base of the eyelashes, resulting in a painful lump on the edge of the eyelid) or a chalazion (a blockage/bacteria infection in a small oil glands at the margin of the eyelid, just behind the eyelashes, leading to a red, swollen eyelid), chronic pink eye (conjunctivitis), keratitis, and corneal ulcer or irritation.
Of course, as surgeries are intrusive and damage healthy tissue (e.g., leaving behind scar tissue or possibly even causing blepharitis), given other options, less intrusive treatment is always preferable.

Demodex folliculorum

, ''Demodex folliculorum
The parasite, Demodex folliculorum (D. folliculorum), causes blepharitis when the parasite is present in excessive numbers within the dermis of the eyelids.
High numbers of D. folliculorum are associated with blepharitis and acne rosacea.

Meibomian gland

meibomian glandsmeibomian gland dysfunctiontarsal glands
The overall etiology is a result of bacteria and inflammation from congested meibomian oil glands at the base of each eyelash.
They may also contribute to blepharitis.

Stye

hordeolumstyesexternal hordeolum
Long-term untreated blepharitis can lead to eyelid scarring, excess tearing, difficulty wearing contact lenses, development of a stye (an infection near the base of the eyelashes, resulting in a painful lump on the edge of the eyelid) or a chalazion (a blockage/bacteria infection in a small oil glands at the margin of the eyelid, just behind the eyelashes, leading to a red, swollen eyelid), chronic pink eye (conjunctivitis), keratitis, and corneal ulcer or irritation.
Styes often result from a Staphylococcal infection in the eye, and can be secondary to blepharitis or a deficiency in immunoglobulin.

Dry eye syndrome

dry eyekeratoconjunctivitis siccadry eyes
The most frequently used method is to measure tear production via tear break-up time (TBUT), which calculates the duration interval between complete blinks.
Abnormalities of the lipid tear layer caused by blepharitis and rosacea, and abnormalities of the mucin tear layer caused by vitamin A deficiency, trachoma, diphtheric keratoconjunctivitis, mucocutaneous disorders and certain topical medications are causes of keratoconjunctivitis sicca.

Telangiectasia

spider veinstelangiectasiastelangiectases
Other signs may include telangiectasia on the anterior eyelid, collarettes encircling the lash base, and corneal changes.
Blepharitis

Conjunctivitis

pink eyepinkeyeblepharoconjunctivitis
Long-term untreated blepharitis can lead to eyelid scarring, excess tearing, difficulty wearing contact lenses, development of a stye (an infection near the base of the eyelashes, resulting in a painful lump on the edge of the eyelid) or a chalazion (a blockage/bacteria infection in a small oil glands at the margin of the eyelid, just behind the eyelashes, leading to a red, swollen eyelid), chronic pink eye (conjunctivitis), keratitis, and corneal ulcer or irritation.
Blepharoconjunctivitis is the dual combination of conjunctivitis with blepharitis (inflammation of the eyelids).

Sulfacetamide

sodium sulfacetamidesodium sulamyd
Another method to reduce side effects of blepharitis are antibiotics such as erythromycin or sulfacetamide, which are used via eye drops, creams, or ointments on the eyelid margin.
It also has anti-inflammatory properties when used to treat blepharitis or conjunctivitis (in eye-drop solution).

Warm compress

warm compresseswarm moist compress
Lid hygiene measures such as warm compresses and lid scrubs were found to be effective in providing symptomatic relief for participants with anterior and posterior blepharitis.
swollen eyelids (blephartis)

Inflammation

inflammatoryinflammatory responseinflamed
Blepharitis is characterized by chronic inflammation of the eyelid, usually at the base of the eyelashes. Blepharitis is one of the most common ocular conditions characterized by inflammation, scaling, reddening, and crusting of the eyelid.

Pathogenic bacteria

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

Allergy

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

Staphylococcal infection

staph infectionstaph infectionsstaphylococcal
Different variations of blepharitis can be classified as seborrheic, staphylococcal, mixed, posterior or meibomitis, or parasitic.

Blurred vision

blurry visionblurryblurred
Additional symptoms may include visual impairment such as photophobia and blurred vision.

Rosacea

acne rosaceagranulomatous rosaceaphymatous rosacea
Diseases and conditions that may lead to blepharitis include: rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, demodicosis (Demodex), and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).

Herpes simplex

herpesherpes virusesherpetic
Diseases and conditions that may lead to blepharitis include: rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, demodicosis (Demodex), and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).

Dermatitis

eczemaallergic dermatitischronic eczema
Diseases and conditions that may lead to blepharitis include: rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, demodicosis (Demodex), and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).

Molluscum contagiosum

molluscum contagiosum viruswarts
Diseases and conditions that may lead to blepharitis include: rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, demodicosis (Demodex), and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).

Contact dermatitis

contact allergycontact allergiesoccupational dermatitis
Diseases and conditions that may lead to blepharitis include: rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, demodicosis (Demodex), and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).

Seborrhoeic dermatitis

seborrheic dermatitisseborrheaseborrheic
Diseases and conditions that may lead to blepharitis include: rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, demodicosis (Demodex), and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).

Demodicosis

demodectic mangedemodecticDemodex Mange
Diseases and conditions that may lead to blepharitis include: rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, demodicosis (Demodex), and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).