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Aetiology

Last edited 24 May 2022. Last reviewed 27 May 2022

Authoring team

The exact aetiology of the condition is unknown (1).

The following inflammatory and infectious conditions are known to cause blepharitis:

inflammatory:
- seborrhoeic dermatitis
- meibomian gland dysfunction
- atopic and contact dermatitis
- rosacea
infectious:
- bacterial – most commonly S. aureus and S. epidermidis, Propionibacterium acnes
- viral – Molluscum contagiosum, herpes simplex or varicella zoster
- parasitic – Demodex folliculorum mite infestation (1,2)

Reference:

(1) Carlisle RT, Digiovanni J. Differential Diagnosis of the Swollen Red Eyelid. Am Fam Physician. 2015 Jul 15;92(2):106-12.
(2) Jackson WB. Blepharitis: current strategies for diagnosis and management. Can J Ophthalmol. 2008;43(2):170-9.

Demodex mites and blepharitis

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Aetiology

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