My underwear smells really bad after wearing it all day

Particularly unpleasant smell after wearing underwear for a day may be related to factors such as excessive sweat secretion, insufficient perineal cleaning, bacterial growth, etc. In rare cases, it may also be caused by diseases such as vaginitis and urethritis. It is recommended to change underwear in time and keep the perineum dry and clean. If accompanied by itching or abnormal secretions, seek medical examination.

When the perineal sweat glands secrete strongly during daily activities, the sweat mixes with the bacteria on the skin surface to produce odor. If cotton underwear is not replaced in time after absorbing sweat, the humid environment will accelerate bacterial reproduction and worsen the odor. Obese people or sedentary workers are more likely to suffer from this condition due to poor local ventilation. Choosing pure cotton underwear with good breathability, washing the perineum with warm water every day, and avoiding the use of cleaning products that are too alkaline can reduce the occurrence of odor.

Fungal vaginitis caused by Candida albicans infection can lead to sour-smelling discharge on underwear, often accompanied by vulvar itching and tofu-like leucorrhea. Bacterial vaginosis, which produces fishy-smelling discharge, is associated with overgrowth of Gardnerella bacteria. Men with excessive foreskin may produce odor due to the accumulation of smegma, so they should be careful to open and clean it. When diabetic patients have poor blood sugar control, ketone bodies in urine or secretions may also produce a special odor.

It is recommended to change underwear 1-2 times a day and expose it to sunlight for sterilization after washing. Avoid wearing chemical fiber or tight underwear, and clean the perineum promptly after exercise. If the odor persists after adjusting your living habits, or symptoms such as painful urination or abnormal color of secretions occur, you need to go to the gynecology or urology department for routine leucorrhea and urine routine examinations. Yoghurt containing lactobacilli can be supplemented daily to maintain the balance of the flora, but vaginal douching liquid cannot be used for self-lavage.