What causes sore feet?

Sour feet are usually caused by sweat decomposition, fungal infection, keratin accumulation, bacterial growth, poor foot hygiene and other reasons.

1. Sweat decomposition:

Feet have dense sweat glands and secrete large amounts of sweat every day. Sweat itself is odorless, but when it comes into contact with bacteria on the skin surface, it decomposes to produce isovaleric acid and other substances, forming a sour smell. Symptoms worsen when the amount of exercise increases or when non-breathable shoes and socks are worn. It is recommended to choose moisture-wicking cotton socks and change and wash them every day.

2. Fungal infection:

Tinea pedis, commonly known as athlete's foot, is the most common cause. The metabolism of fungi such as Trichophyton rubrum produces acidic substances. Accompanied by symptoms such as peeling of the toes, blisters, and itching. It may be related to contact transmission such as sharing slippers and walking barefoot. Treat with antifungal medications and keep feet dry.

3. Cutin accumulation:

The cuticle on the sole of the foot is thick, and when dead cells accumulate and are decomposed by bacteria, they will produce a putrid smell. Not cleaning your feet for a long time or wearing hard-soled shoes will aggravate this phenomenon. Symptoms include cracked heels and thickened calluses. Regular polishing with a pumice stone and application of foot cream containing urea can improve the condition.

4. Bacterial reproduction:

Microorganisms such as Staphylococcus proliferate in a moist environment, decomposing sebum and keratin to produce sulfide. Wearing the same pair of shoes for more than 8 hours increases the risk significantly. Often accompanied by white scales or yellowing of toenails. Using an antibacterial spray containing tea tree essential oil can help.

5. Poor hygiene:

Incomplete cleaning leads to residual dirt, sweat and dandruff mixed with fermentation. Wearing the same pair of socks for many days in a row and infrequent foot washing are the main triggers. Symptoms include stiff socks and dirt between toenails. It is recommended to wash with warm water and soap every day, focusing on cleaning between toes and nail edges.

Comprehensive management is required to improve sore feet: choose breathable mesh shoes and antibacterial socks, and avoid wearing the same pair of shoes for two consecutive days.； Soak your feet with white vinegar or baking soda 1-2 times a week to adjust the pH. ； Diabetic patients with stubborn foot odor need to investigate metabolic problems ； Temporary foot odor due to hormonal changes in teenagers can require enhanced local care. If it is accompanied by skin damage, exudation or fever, you need to seek medical treatment promptly to rule out serious infection.