What are lice on eyelashes called? - briefly
The infestation of the eyelid margin by crab lice is termed phthiriasis palpebrarum. It is caused by Pthirus pubis, commonly referred to as eyelash lice.
What are lice on eyelashes called? - in detail
The parasites that infest the eyelashes are known as phthiriasis palpebrarum, a specific form of pediculosis caused by the crab‑like louse Pthirus pubis. This species normally inhabits the pubic region but can migrate to the lids, where it clings to hairs and feeds on blood.
Identification
- Small, flattened insects about 1–2 mm long.
- Broad, crab‑shaped body with short legs that grasp the hair shaft.
- Dark brown or gray coloration, often visible as moving specks on the eyelashes.
- Nits (eggs) appear as tiny, oval, whitish or yellowish shells attached near the base of each lash.
Symptoms
- Tickling or itching sensation on the lid margin.
- Redness, swelling, or irritation of the conjunctiva.
- Visible movement of insects on the lashes, especially after a period of inactivity.
Transmission
- Direct contact with an infested person’s hair or skin.
- Sharing towels, pillowcases, or cosmetics that have come into contact with the eyelashes.
Diagnostic approach
- Close visual inspection with a magnifying lens or slit‑lamp examination.
- Removal of a few lashes for microscopic confirmation if necessary.
Treatment options
- Topical pediculicides – ointments containing permethrin 1 % or pyrethrin applied to the lid margin, left for the recommended duration, then washed away.
- Manual removal – fine forceps used to extract live lice and nits; repeated sessions may be required.
- Warm compresses – applied for several minutes to immobilize insects before removal.
- Oral ivermectin – indicated for extensive infestation or when topical agents are contraindicated; dosage follows standard anti‑parasitic protocols.
Preventive measures
- Avoid sharing personal items that contact the eye area.
- Wash bedding, towels, and makeup brushes in hot water.
- Treat sexual partners if they exhibit signs of pubic lice, as cross‑infestation is common.
Prognosis Prompt eradication eliminates symptoms within days; untreated cases may lead to secondary bacterial infection or persistent inflammation. Regular follow‑up ensures complete clearance of both adult lice and their eggs.