Itching down there is perhaps one of the most annoying and most kept-quiet complaints there is. You do not want to scratch, you dare not talk about it with anyone, and meanwhile you wonder whether it is an STI. Good news up front: itching is far more often caused by a yeast infection or simple irritation than by an STI. But it pays to know when it is a signal.
Our position: itching alone is rarely an STI, itching with discharge, burning or bumps alongside does deserve a second look. The accompanying sign is the key.
Itching down there: the likely causes
This table helps you choose a direction based on what comes with the itching. It is a decision aid, not a diagnosis.
| Itching plus this sign | Likely cause | STI or not | What to do |
|---|---|---|---|
| White, lumpy discharge, red and swollen, no foul smell | Yeast infection (candida) | Not an STI | Pharmacy, or GP when in doubt |
| Itching after new soap, detergent, lubricant or shaving | Contact irritation or allergy | Not an STI | Remove the trigger, watch for a few days |
| Frothy, yellow-green discharge with a strong smell | Trichomonas | STI | Trichomonas check or combined check |
| Itching with changed discharge after unprotected contact | Chlamydia or gonorrhoea | STI | Combined PCR check |
| Intense itching at night, small bumps or burrows in the skin | Pubic lice or scabies | Via contact | GP or pharmacy for the right treatment |
| Greyish white, fishy smell, little itching but irritation | Bacterial vaginosis | Not an STI | GP |
Why a yeast infection is so often the cause
A vaginal yeast infection from candida is common and is not an STI. The balance in the lining is disturbed, for example after an antibiotic course, with stress or around your period. Typical are itching, redness and white lumpy discharge without a foul smell. According to Thuisarts.nl, a first episode of itching with white discharge and pain when peeing is a reason to see your GP, and an STI becomes more likely when other complaints appear alongside.
When does itching point to an STI?
Trichomonas is the STI most often accompanied by itching, especially combined with frothy, yellow-green discharge and a pronounced smell. Chlamydia and gonorrhoea can also cause irritation, although urinary complaints and discharge are more prominent there. The RIVM describes in its annual STI figures that trichomonas is less common than chlamydia, but can cause clear complaints. It becomes suspicious, then, when the itching goes with abnormal discharge and there has been recent unprotected contact.
Which check fits, and when?
For itching with an STI background a PCR check is the right route. Trichomonas can be checked reliably from 1 to 2 weeks after contact, chlamydia and gonorrhoea from about 2 weeks. If you want to rule out broadly at once, the combined check for chlamydia, gonorrhoea and trichomonas covers the most common causes. If you mainly suspect trichomonas, a targeted trichomonas check may be enough. The exact window periods are in how long after sex you can test.
When to see your GP?
Much itching you sort out yourself, but go to your GP for:
- Itching that does not improve within a week after a pharmacy product
- Itching with fever or lower abdominal pain
- Visible bumps, sores or burrows in the skin
- Recurring yeast complaints (more than four times a year)
- Complaints during pregnancy
What you can do yourself to ease the itching
Before you think of an STI, it pays to remove the most common triggers. Avoid perfumed soap, shower gel and intimate spray, because they disturb the natural balance of the lining. Wash the area only with lukewarm water and pat it dry rather than rubbing. Wear cotton underwear and avoid tight clothing that traps warmth and moisture, because yeast thrives there. Change quickly after exercise. If the itching improves within a few days of removing a trigger, irritation was probably the cause. If the itching persists, or discharge or burning appears alongside, a check is the sensible next step.
Home test, GGD or GP: where do you get checked?
For itching without STI risk, the pharmacy or GP is often enough, because a yeast infection you usually treat yourself. If the combination of complaints points to an STI, an anonymous home test is a low-threshold route: you collect your material at home and get your results online, without it going into your GP file. The GGD sometimes tests for free, but with conditions around age and risk group, so not everyone qualifies. More on this is in GGD test refused.
If mainly your discharge is changing, also read discharge and STIs. For the full testing overview, which STI test you need when is your starting point. Itching down there is annoying but rarely serious, and with the right check you quickly know whether you can let your worry go.
Also read the overview STI symptoms in men and women, and compare with STI symptoms in women and how soon STI symptoms appear.
Author
Discreettest
Dr. Naimi, BIG-registered physician, oversees the medical standards behind our content and assessments. Read our medical policy
