There are various types of fungal infections, and some of the general causes of these infections are:
Sweaty, moist feet, or when people use public swimming pools or locker rooms, and wearing dirty shoes and socks are common causes of fungal infections like athletes foot or toenail fungus.
Moisture and sweat in the toenail area, and poor hygiene can lead to fungal infections.
Some fungal infections are contagious and can be caused because of physical contact with another person afflicted with this infection or through animals.
A poor diet, low in nutrition can also weaken the immune system and make you more susceptible to fungal infections like yeast infections.
Antibiotic medications can trigger off fungal infections as these medicines destroy healthy bacteria too while treating illnesses. When the healthy bacteria decrease, then fungal infections thrive in the body.
Corticosteroids can also cause fungal infections as they weaken the immune system.
People suffering from cancer, diabetes or immunity weakening diseases are susceptible to fungal infections.