Vaginitis: symptoms, causes and treatment, with a focus on yeast infection

Vaginitis means inflammation of the vagina, and a yeast infection is one of its most familiar forms during the reproductive years. A typical yeast infection causes intense itching and burning, along with a white, clumpy discharge that has little or no smell. The condition is uncomfortable but usually harmless and responds well to treatment. This guide explains where the symptoms come from, how yeast vaginitis differs from other types of vaginal inflammation, and when it makes sense to have a doctor assess the situation.

Vaginitis explained: yeast, bacteria and hormonal change

Vaginitis can be caused by yeasts, by bacteria, by a tiny parasite called a protozoan, or by a lack of the hormone oestrogen. The most common cause of vaginitis is either a yeast infection or bacterial vaginosis, and the two occur roughly equally often. Their symptoms partly overlap, which is why it pays to be careful before treating yourself. A product that works well for one type of vaginitis often does nothing for another.

This article focuses on yeast infection, because it is the type most people can recognise and often treat themselves once they have had it before. Bacterial vaginosis, trichomoniasis and atrophic vaginitis are covered as the main alternatives to rule out. Knowing the differences helps you choose the right next step, whether that is a pharmacy product, a conversation with a doctor or a test. The goal is simple: treatment that matches the actual cause.

Candida yeast and the balance of the vagina

A vaginal yeast infection is almost always caused by a yeast called Candida albicans. This yeast normally lives on the skin, on mucous membranes, in the gut and in the vagina, and in most cases it causes no symptoms at all. Inflammation develops when the amount of yeast grows too large and the lining of the vagina becomes irritated. In other words, a yeast infection is not something caught from outside but a disturbance in the balance of your own microbes.

Yeast vaginitis is typical in women of reproductive age. In children and before puberty, vaginal inflammation caused by yeast is very rare. For that reason, itching or discharge in a young girl's genital area should always be shown to a doctor rather than treated at home with an antifungal product.

Vaginitis symptoms: recognising a yeast infection

The symptoms of a yeast infection are usually felt most clearly around the vulva, the external genital area. The most common complaints are intense itching, burning or a raw, irritated feeling, mild swelling of the labia and redness of the mucous membranes. Small sores can also appear on the delicate skin, and sex may feel painful. Burning may also be felt when passing urine, as the urine touches the irritated tissue.

The discharge is often white, clumpy and sticks to the vaginal walls, and it is practically odourless. Sometimes, however, it is smoother, greyish or even watery, so the appearance of the discharge alone is not enough to draw a firm conclusion. A yeast infection does not usually cause fever, lower abdominal pain or real difficulty passing urine. If those are present, another cause is more likely.

Not all itching is yeast. Fewer than half of women with genital itching turn out to have an actual yeast infection. Mild itching and burning can also come from a condition called cytolysis, in which the lactic acid bacteria of the vagina lower its pH and the acidic secretion irritates the vulva. This is a normal phenomenon, but it is easily mistaken for a yeast infection.

Cytolysis does not improve with antifungal medication, because there is no overgrowth of yeast to treat. If cytolysis causes troublesome symptoms, a mild local oestrogen cream or pessary recommended by a doctor may help keep them away. This is exactly why repeated itching should not be treated again and again with yeast products. Getting the diagnosis right spares you unnecessary courses of treatment and further irritation of the mucous membranes.

Yeast infection causes and risk factors

The causes of a yeast infection usually come down to a shift in the normal balance of the vagina. A course of antibiotics is a well-known trigger, because antibiotics also reduce the protective lactic acid bacteria in the vagina. Pregnancy, combined contraceptive pills, diabetes and raised blood sugar, and conditions that weaken the immune system also increase susceptibility. Changes in hormones and blood sugar appear to make the vaginal lining a more favourable place for yeast to grow.

Everyday factors matter as well. Tight, sweaty clothing, constant use of panty liners and non-breathable pads can all add to symptoms. Washing too often, using soap and choosing heavily perfumed products irritate the mucous membranes and weaken their natural protection. Even so, not everyone has an identifiable trigger, and a yeast infection is not a sign of poor hygiene.

These causes are worth keeping in mind especially when yeast vaginitis keeps coming back. If a yeast infection appears after almost every course of antibiotics, it is a good idea to mention this to the doctor the next time antibiotics are prescribed. If infections recur without any obvious reason, checking your blood sugar may be appropriate. That way, an underlying factor can be found and treated.

Other causes of vaginal inflammation besides yeast

Because the symptoms overlap, the most useful question with any vaginal discomfort is which type of vaginitis is behind it. The three main alternatives to a yeast infection are bacterial vaginosis, trichomoniasis and atrophic vaginitis. Each has its own typical pattern of discharge, odour and circumstances. Each also calls for its own treatment, which is why guessing can lead to the wrong product.

Bacterial vaginosis

In bacterial vaginosis, the protective lactic acid bacteria of the vagina are replaced by bacteria that thrive without oxygen, and the vaginal pH rises. The most typical symptom is a profuse, smooth, milky or greyish discharge with an unpleasant, fishy smell. The smell may get stronger after sex or after a period, and there may also be mild itching. So an odourless, clumpy discharge points more towards yeast, while a smooth, bad-smelling discharge points more towards bacterial vaginosis.

Bacterial vaginosis is not a sexually transmitted infection, and a partner does not need treatment. A mild case may settle on its own or with self-care products that restore the acidity of the vagina. Symptomatic bacterial vaginosis, however, is usually treated with a prescription medicine, and antifungal treatment does not help it.

Bacterial vaginosis is more common than average in people who use a copper IUD and in people who smoke. The risk also rises with multiple sexual partners, even though it is not a sexually transmitted infection. Treatment is usually metronidazole or clindamycin, either by mouth or applied locally into the vagina. Alcohol should be avoided during a course of metronidazole, because the combination can cause severe nausea.

Trichomoniasis

Trichomoniasis is caused by a tiny single-celled parasite and is usually passed on through sex. It causes a profuse, yellowish, foul-smelling discharge, often together with burning when passing urine. In men the infection frequently causes no symptoms, and a partner is always treated. Trichomoniasis is diagnosed with a laboratory test and treated with a course of medicine prescribed by a doctor.

Atrophic vaginitis

After menopause, falling oestrogen levels make the lining of the vagina thinner. This thin lining irritates and becomes inflamed easily, and the discharge may be profuse and yellowish. The symptoms of atrophic vaginitis can resemble a yeast infection, but in addition to treating the inflammation, local oestrogen is needed. For this reason, anyone over 60 should always talk to a doctor before using a yeast medicine.

Sexually transmitted infections such as chlamydia, gonorrhoea and herpes can also cause burning or unusual discharge. Blisters on the genitals, or even a slight suspicion of a sexually transmitted infection, are a reason to get tested. Laboratory tests are rarely needed to investigate vaginitis, but they are important when symptoms keep returning.

Home care and self-treatment for a yeast infection

Treating a yeast infection yourself is often possible if you have had the same problem before and recognise the symptoms as the same. Vaginal pessaries, vaginal creams and a capsule taken by mouth are all suitable for self-treatment. The most important thing is to follow the package instructions and check that the symptoms ease as expected. If this is the first time, or something feels different from before, it is safer to ask a doctor first.

A pessary is usually used in the evening before going to bed. The pessary or cream is inserted as deep into the vagina as possible, following the package instructions and often using the applicator provided. Tampons are not recommended during treatment, but pads or panty liners can be used briefly because of the discharge. It is worth completing the course as instructed, even if the itching eases after the first evening.

Small everyday choices support the medication and reduce the chance of the infection returning. Water, or a mild wash with a pH below 7, is enough for cleaning the genital area, and rinsing directly inside the vagina is best avoided. Airy underwear, a tampon or menstrual cup instead of pads, and wiping from front to back after using the toilet are good basic habits. Yeast can also spread from the rectum to the vagina, which explains why the direction of wiping matters.

Cutting down on foods high in sugar may help. Baked goods raised with yeast, on the other hand, do not need to be avoided. Eating plain yoghurt containing lactic acid bacteria every day may benefit people with recurrent infections. Putting yoghurt or a vinegar solution into the vagina is not recommended, as no benefit has been shown and both may weaken the effect of the medicine.

Vaginitis treatment: local antifungals or oral medication

The standard vaginitis treatment for yeast is an antifungal from the azole group. Local treatment uses vaginal pessaries or creams containing an active ingredient such as clotrimazole, miconazole or econazole, and the availability of products varies from country to country. Depending on the product, treatment lasts from one to three days. The pessary or cream is inserted in the evening as deep into the vagina as possible, usually with the applicator in the pack.

For strong itching of the vulva, an antifungal cream applied to the outside can be used as well. When yeast inflames both the vulva and the vagina, the condition is often called vulvovaginitis. If the inflammation has clearly spread to the vulva in this way, local treatment may be needed for about a week. Some products are not used during a period, and tampons are not recommended during treatment, so the package leaflet should be read carefully. Local treatment carries only a small risk of interactions with other medicines.

Oral treatment for yeast vaginitis usually means fluconazole, taken as a single capsule. Treatment by mouth is just as effective as local treatment. Fluconazole does, however, interact with some medicines, the most important being the blood thinner warfarin and certain diabetes and asthma medicines. If you take regular medication, check with a pharmacist or doctor that the capsule is suitable before taking it.

Oral fluconazole is recommended for self-treatment only between the ages of 16 and 50. During pregnancy, a yeast infection is not treated with medicine by mouth but locally instead. A rare but possible side effect is an irritation reaction, in which burning increases during treatment. If that happens, treatment should be stopped and the situation reviewed with a doctor.

Yeast infection during pregnancy

Vaginal discharge is naturally more plentiful during pregnancy, and a yeast infection is the most common form of vaginitis at this time. It does not cause problems for the course of the pregnancy, but the symptoms can be very uncomfortable. A yeast infection in pregnancy is treated locally, usually with a product containing clotrimazole. The medicine is inserted into the vagina with the fingers rather than with an applicator.

Pregnant women are advised not to start self-treatment without first talking to a doctor or the midwife or nurse following the pregnancy. The reason is that a change in discharge during pregnancy may also be due to bacterial vaginosis or another infection that is treated differently. Bacterial vaginosis is linked to a slightly increased risk of premature birth during pregnancy, so correct identification is important. Bleeding, lower abdominal pain or fever during pregnancy always need prompt assessment.

Yeast infection in men and partner treatment

A yeast infection in men is fairly uncommon. When it does occur, it usually appears as inflammation of the head of the penis and the foreskin, called balanitis, with redness, itching and burning. Diabetes and significant excess weight particularly increase the risk of yeast-related inflammation of the foreskin. Yeast balanitis is treated with an antifungal cream when needed.

A rash on the head of the penis can have many other causes, such as eczema, psoriasis, excessive washing or inflammation of the urethra. If the symptoms do not settle with self-care within a few weeks, a doctor should take a look. Discharge from the urethra is a reason to see a doctor within the next few days, because a sexually transmitted infection may be behind it.

A partner without symptoms does not need treatment because of a woman's yeast infection. If the partner also has symptoms, a medical assessment is advisable for both. Unlike with yeast, in trichomoniasis the partner is always treated.

Recurrent yeast infections and preventive treatment

For some people, yeast keeps coming back. A yeast infection is usually called recurrent when there are several episodes a year, often four or more. Common underlying reasons include repeated courses of antibiotics, raised blood sugar and everyday factors such as sweaty clothing. Sometimes what looks like recurrent yeast turns out to be bacterial vaginosis, cytolysis or a skin condition.

That is why recurrent yeast vaginitis should be confirmed with a sample before treatment continues. A doctor can take a yeast culture and at the same time look into predisposing factors such as blood sugar. If recurrent yeast infection is confirmed, treatment may include preventive therapy, in which a single dose of antifungal medicine is taken once a week for a number of weeks. The need for preventive treatment and its length are always assessed individually.

When to see a doctor

Home treatment is usually enough if you have been healthy, are between 16 and 60, are not pregnant and the symptoms are familiar from earlier episodes. In that case, a self-care product should relieve the symptoms within three days, and the problem should clear in about a week. If it does, no separate check-up is needed. Do keep an eye on whether the symptoms genuinely fade rather than simply changing form.

It is a good idea to contact a doctor if you have symptoms for the first time, are under 16 or over 60, are pregnant or have frequent infections. An assessment is also needed if the discharge smells bad or contains blood, if you suspect a sexually transmitted infection, if there are blisters on the genitals or if your partner also has symptoms. Contact a doctor as well if self-treatment has not helped within three days, the problem has not cleared within a week or burning increases during treatment. In these situations the cause may be something other than yeast, and the right treatment is found by examining it.

Same-day assessment is needed if genital symptoms come with fever, clear lower abdominal pain, feeling generally unwell or unexpected bleeding. These are not part of an ordinary yeast infection and may point, for example, to an infection of the internal reproductive organs. For a pregnant woman, bleeding or pain is a reason to contact a doctor or emergency service without delay. In men, a foreskin that stays tight behind the head of the penis and will not return to its normal position needs immediate treatment.

The doctor's assessment and tests

A doctor's assessment begins with a careful description of the symptoms. The doctor will ask, among other things, when the symptoms started, what the discharge is like, whether it has a smell and whether you have had infections before. Recent antibiotics, contraception, pregnancy, long-term conditions and the possibility of a sexually transmitted infection are also part of the conversation. Many situations can already be assessed on this basis.

At an in-person appointment, the doctor can examine the vulva and vagina if needed and take a sample of the discharge. The sample can be tested for yeast, bacterial vaginosis and trichomonas, and a chlamydia and gonorrhoea sample can be taken as well if appropriate. With recurrent symptoms, a yeast culture helps confirm whether yeast really is the cause. Treatment is then chosen according to the likely or confirmed cause of the symptoms.

How to treat vaginitis depends on its type. If yeast is the cause, the doctor may recommend local treatment or medicine by mouth, taking your other medicines into account. If the cause is bacterial vaginosis or trichomoniasis, a different medicine is needed, and it is a prescription medicine. In atrophic vaginitis, local oestrogen is added to the treatment. This is why identifying the right type of vaginitis matters more than getting the fastest possible course of medicine.

How Dokport can help with vaginitis

If vaginitis symptoms are worrying you, Dokport gives you a quick and easy connection to a remote doctor. You can describe your symptoms in a chat, and the doctor will assess whether yeast treatment suits your situation or whether the cause should be investigated further. You receive personalised guidance, for example on choosing a medicine, possible interactions and practical everyday measures. A remote doctor can also help if you are pregnant or unsure whether the problem is yeast at all.

Medication may be prescribed if the doctor considers it appropriate for your situation, and sick leave may also be granted when needed. Not everything can be handled remotely, however. If the symptoms suggest bacterial vaginosis, trichomoniasis, a sexually transmitted infection or a recurrent infection, the doctor will refer you for tests or an in-person appointment. The aim is to get you to the right treatment quickly and safely.

In the chat, it helps to mention when the symptoms started, the colour and smell of the discharge, a possible pregnancy and any medicines you take. With this information, the doctor can assess the situation more precisely and take into account, for example, the interactions of fluconazole. If you have already tried self-treatment, say which product you used and how it worked. The more precisely you describe your symptoms, the better the doctor can guide you onwards.

Follow-up and prevention after treatment

Once treatment has worked, a separate follow-up check is usually not needed. Itching may ease within the first few days, but the irritated lining can stay sensitive for a little while longer. Give the tissue time to settle, and avoid perfumed products and tight clothing during this period. If the symptoms come back soon after treatment, contact a doctor rather than simply repeating self-treatment.

Prevention relies on the same measures as home care. Airy underwear, gentle washing, moderate sugar intake and avoiding panty liners all support the natural balance of the vagina. For people with diabetes, good blood sugar control may reduce yeast symptoms. During a course of antibiotics, it helps to know that yeast symptoms are possible, so you can recognise them early.

Summary

Vaginitis has several causes, and yeast infection is one of the most common, usually easy to treat and recognisable by intense itching, burning and an odourless, clumpy discharge. Familiar yeast symptoms can usually be treated at home with a local product or a single capsule taken by mouth. A bad-smelling discharge, fever, lower abdominal pain, pregnancy or repeated infections are signs that the cause should be clarified with a doctor. That way you can be sure the treatment matches the right type of vaginitis.