Warning signs to watch for
In the vast majority of cases, white discharge is perfectly normal and simply reflects your body functioning as it should. However, certain changes can indicate an imbalance or infections that warrant medical attention.
Pay attention to colour changes. If your discharge turns grey, greenish, dark brown, or takes on a pronounced yellowish tinge, this is a signal not to ignore.
Odour is also an important indicator. Normal white discharge has no particular smell. If you notice a strong, unpleasant odour — notably a fishy smell — this may indicate a problem.
The texture can also be a warning sign. Discharge that becomes very thick with a curdled appearance (like cottage cheese), foamy or unusually creamy may indicate an infection.
Finally, and perhaps the most obvious indicator, be alert to the signs that accompany your discharge: itching (pruritus), vaginal burning, redness, swelling of the labia, or lower abdominal pain. These symptoms are never normal and require medical attention.
If your discharge suddenly changes in colour, texture or quantity, without any apparent reason linked to your cycle, this is also a reason to consult a doctor.
Possible causes of abnormal discharge
Several situations can explain abnormal white discharge, and most are easily treatable.
Vaginal thrush
Vaginal thrush is one of the most common explanations. It generally results from an excessive proliferation of the Candida albicans fungus, naturally present in the vagina.
This manifests as very thick white discharge, curdled or milky in appearance, accompanied by itching intense and sometimes burning.
Several factors can encourage it: wearing tight or synthetic clothing, using acidic soaps, taking antibiotics that disrupt the microbiome, the onset of pregnancy, or diabetes.
Bacterial vaginosis
Bacterial vaginosis is another very common cause, particularly among women of reproductive age.
It corresponds to a imbalance in the vaginal microbiome, where certain bacteria proliferate excessively. The discharge then becomes malodorous (fishy smell), greyish or yellowish.
It can occur following a course of antibiotics, frequent vaginal douching, wearing tight synthetic clothing, or in cases of oestrogen deficiency.
Sexually transmitted infections (STIs)
STIs can also cause abnormal discharge.
During unprotected intercourse, infections such as trichomoniasis, chlamydia or gonorrhoea can be transmitted. They generally cause yellowish or greenish discharge, malodorous, accompanied by burning and itching.
The presence of a foreign body
Less commonly, the presence of a foreign body in the vagina, such as a forgotten tampon, can cause an infection with heavy and malodorous discharge.
It is important to note that these underlying causes are rarely serious and respond well to treatment when addressed promptly.