Related Experiment Video
Updated: May 21, 2026

Iris Fixation via External Pentagram Suturing
Published on: May 5, 2022
Chronic conjunctivitis related to phthiriasis palpebrarum
Rodrigo de Pinho Paes Barreto1, Ana Luiza Biancardi, Marcio José Salgueiro
1Department of Ophthalmology, Hospital Federal dos Servidores do Estado do Rio de Janeiro, Rua Sacadura Cabral 178, Rio de Janeiro, RJ, Brazil. barreto@live.com
Phthiriasis palpebrarum, a pubic lice infestation of the eyelids, can cause chronic conjunctivitis. This case highlights the importance of recognizing this sexually transmitted infection for proper diagnosis and treatment.
Area of Science:
- Ophthalmology
- Infectious Diseases
Background:
- Chronic conjunctivitis can have various etiologies.
- Phthiriasis palpebrarum is an infestation of the eyelashes by pubic lice (Pthirus pubis).
Observation:
- A 36-year-old female presented with a 3-month history of pruritus and ocular hyperemia.
- Examination revealed conjunctival hyperemia, edema, palpebral margin hypertrophy, and numerous nits at the base of the eyelashes.
- Slit-lamp examination showed oval structures on the lashes and deposits on the palpebral margin.
Findings:
- Diagnosis of phthiriasis palpebrarum was confirmed by identifying nits and parasites on the eyelashes.
- The patient was evaluated for other sexually transmitted diseases.
Implications:
- This case underscores the need for ophthalmologists to consider phthiriasis palpebrarum in cases of chronic conjunctivitis.
- Prompt diagnosis and treatment, including managing potential co-infections and preventing re-infestation, are crucial.
- Public health education regarding the transmission and management of this sexually transmitted infection is important.
Related Concept Videos
Chronic Pharyngitis
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Microbiome of the Eye
Glaucoma: Overview
Photoreceptors and Visual Pathways
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features
Bacterial Phylum Chlamydiae
