Trichophyton rubrum (T. rubrum) is a fungus that colonizes on the upper layer of dead skin. It is one of the most common causes of fungal nail infection, athlete’s foot (fungal infection of feet), and ringworm (fungal infection of the skin). – about 80% of fungal infections on our body surface (skin, hair, nail etc) are thought to be caused by this fungus.

T.rubrum prefers to live between toes, where pressure, moisture, and temperature are high. It is usually present on our feet, but the human immune system fights against the fungus and prevents overgrowth of it. – this is why it is important to keep your feet dry!

In humans, men are more common to get infected by T. rubrum than women. And the infection is more common in older ages.

T. rubrum usually stay on the upper layer of skin, but it is also possible to cause deeper infections. – so it is important to get a professional help if you have a chronic fungal infection.