Is It Pubic Lice?
One of the few itchy conditions you can actually see — and the several things it gets confused with, none of which respond to an insecticide.
Part of the Complete Pubic Lice Guide.
Key fact: Pubic lice are one of the few itchy conditions you can actually see. If good light and a magnifier show no lice and no eggs cemented to the hair, the itch is almost certainly something else — and treating it with an insecticide will not help.
What to look for
- The lice themselves — about 2mm, broad and crab-shaped, greyish-brown, moving slowly at the base of hairs
- Eggs — white or yellow dots firmly cemented to the hair shaft, usually near the skin
- Dark specks in underwear — louse droppings, often the first thing noticed
- Small red or blue-grey spots on the skin from bites
- Check all coarse hair — chest, abdomen, armpits, beard, thighs — not just the pubic area
The test that settles most arguments is the same one used for head lice: try to slide what you have found along the hair. Eggs are cemented and will not move. Skin flakes, product residue and debris slide off easily.
Scabies
The closest mimic, and the one that matters most to get right, because the treatment is different and covers the whole body.
| Points to scabies | Points to pubic lice |
|---|---|
| Itch across the body — finger webs, wrists, waist, buttocks as well as genitals | Itch confined to hairy areas |
| Burrows: fine greyish wavy lines, classically in the finger webs | Visible lice and cemented eggs on hair |
| Whole household itching | Sexual partners affected |
| Nothing visible on the hairs | Something visible on the hairs |
Both can be present at once. Is it scabies? covers the distinction from the other direction, and treating only one when both are present is a common reason the itch does not settle.
Thrush and candida
- Itch and soreness of the skin rather than the hair — vulva, glans, skin folds
- Redness, sometimes with a shiny surface, and satellite spots beyond the main patch
- Discharge in vaginal thrush — thick and white, without a strong smell
- Nothing attached to the hair
- Responds to antifungal treatment, which lice do not. See thrush
Shaving rash and folliculitis
Extremely common, and frequently mistaken for lice because both involve the hair.
- Small red bumps or pustules centred on hair follicles, appearing within days of shaving or waxing
- Ingrown hairs, sometimes with a visible hair curled under the skin
- Itchy or tender, and worse in the direction of hair growth
- No lice, no cemented eggs
- Settles when hair removal is paused
Eczema, psoriasis and contact reactions
- Eczema — dry, scaly, itchy skin, often present elsewhere on the body too. See eczema and dermatitis
- Psoriasis — in the genital area it is often smooth and red rather than scaly, with well-defined edges, and there is usually psoriasis elsewhere
- Contact dermatitis — from soaps, shower gels, fragranced products, latex, wipes or laundry detergent. Follows what touched it, and settles when the product is stopped
- Lichen sclerosus — white, thinned, fragile skin with persistent itch, which needs proper assessment and specific treatment
The other causes of genital itch
- Bacterial vaginosis and trichomoniasis — discharge with a smell, rather than hair involvement
- Genital herpes — painful blisters and ulcers rather than itch alone
- Genital warts — visible growths, usually not itchy
- Threadworms — itching around the anus, markedly worse at night, commonest in children and their households
- Simple dryness or over-washing — soap and frequent washing strip the skin and are a genuinely common cause
Things that are not eggs
- Hair casts — white cylinders that slide along the hair
- Product residue from soaps, creams or powders
- Skin flakes caught on the hair
- Scabs from scratching, which can look like something attached
All of these move. Eggs do not. That single test avoids most unnecessary treatment.
When to be seen
Get assessed rather than self-treating if: you cannot see lice or eggs but the itch persists; there are lice or eggs on the eyelashes or eyebrows; the skin is broken, weeping or crusted; you are pregnant or breastfeeding; the affected person is a child; or you have itching alongside discharge, ulcers, pain or any other genital symptom, which points away from lice and towards something needing testing.
Whatever the cause turns out to be, an itch in this area that follows new sexual contact is a reasonable prompt for a full sexual health check — see treatment, partners and testing.
About 2mm long, broad and crab-shaped, greyish-brown, moving slowly at the base of coarse hairs. Their eggs are white or yellow dots cemented firmly to the hair shaft near the skin. Dark red or brown specks in underwear are louse droppings and are often the first thing noticed. Try to slide what you have found along the hair. Eggs are cemented to the shaft and will not move; hair casts, product residue and skin flakes slide off easily. That one test avoids most unnecessary treatment. Scabies itches across the body, including the finger webs, wrists, waist and buttocks, produces burrows as fine greyish wavy lines, and affects whole households. Pubic lice itch only in hairy areas and are visible on the hair as lice or cemented eggs. Both can be present at once. Commonly, yes. Thrush, shaving rash and folliculitis, eczema, psoriasis, contact dermatitis from soaps or wipes, lichen sclerosus, threadworms and simple over-washing all cause genital itch, and none of them involves anything attached to the hair. No. Pubic lice are one of the few itchy conditions you can actually see, so if good light and a magnifier show no lice and no cemented eggs, an insecticide will not help. Persistent itching without visible lice should be assessed rather than treated blindly.Frequently Asked Questions
What do pubic lice look like?
How can I tell eggs from skin flakes?
Is it pubic lice or scabies?
Could my genital itching be something else?
I have itching but cannot see any lice. Should I treat anyway?
References
- NHS. Pubic lice. nhs.uk
- National Institute for Health and Care Excellence. Clinical Knowledge Summary: Pubic lice. cks.nice.org.uk
- IUSTI. European guideline for the management of pediculosis pubis. iusti.org
- British Association for Sexual Health and HIV. Clinical guidelines. bashh.org
- NHS. Sexually transmitted infections (STIs). nhs.uk
Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. Insecticide treatments must never be used on the eyebrows or eyelashes. Pubic lice are usually sexually transmitted, so a full sexual health check is part of the assessment. Always consult a qualified healthcare professional for diagnosis and treatment. In a medical emergency, call 999.