Ringworm is a common fungal infection, not a worm, caused by dermatophytes that thrive in warm, moist environments. It often shows up as red, circular patches with a raised edge and clearer center, creating the familiar “ring” shape. The infection is “highly contagious” and spreads easily between people, pets, and shared surfaces. While it is not dangerous, it can be persistent and may require weeks of treatment, making prevention especially important.

The most effective protection is keeping skin clean and dry. Fungi depend on moisture, so sweaty areas like the underarms, groin, feet, and behind the knees are higher risk. Drying thoroughly after bathing, changing out of damp clothes quickly, and wearing breathable fabrics all help reduce moisture. Simple habits such as using a fresh towel can make a big difference over time.

Fungal spores can survive on fabrics for days, so regular laundering is essential. Clothes, towels, and bedding should be washed frequently, especially after sweating. Hot water helps remove spores, and drying laundry in sunlight adds natural disinfection. Avoid sharing personal items, as even “harmless” objects can pass the infection to others.

Pets, especially cats and dogs, can carry ringworm without obvious signs. They may appear healthy while spreading spores at home. Washing hands after contact, cleaning pet bedding, and getting veterinary care when needed can prevent a “household problem.”

Using the wrong treatment can worsen ringworm. Steroid creams may reduce itching but allow the fungus to spread. Proper antifungal care, along with good hygiene, nutrition, rest, and stress control, creates a strong, layered defense against infection.