Fungal infections

Fungal infections of the skin are common and usually easy to treat once they are correctly diagnosed. They thrive in warm, moist areas like the feet, groin and skin folds.

Many rashes look alike, so a quick test in the office may help determine whether a fungus is the cause before you start treatment.

Common fungal infections

• Ringworm (tinea corporis): a round, scaly rash with a clearer center. It is caused by a fungus, not a worm
• Athlete's foot (tinea pedis): itching, peeling or cracking between the toes or on the soles
• Jock itch (tinea cruris): an itchy rash in the groin
• Scalp ringworm (tinea capitis): scaly patches and hair loss, most common in children
• Yeast infections (candida): red, moist rashes in skin folds
• Nail fungus

Tinea versicolor and ringworm

Tinea versicolor is caused by a yeast that normally lives on the skin. It causes small patches that are lighter or darker than the surrounding skin, often on the chest, back and shoulders, and it is more noticeable after sun exposure. It is not contagious. Treatment with medicated washes or creams clears the yeast, but color can take months to recover. It often comes back in warm weather, so we may suggest a maintenance routine.

Ringworm is contagious and can spread from people, pets and surfaces. Most cases clear with prescription creams. Scalp ringworm requires oral medicine; widespread or resistant infections may also need oral treatment.

How we treat it

• Skin scraping and testing in the office when needed
• Antifungal creams, sprays and shampoos
• Oral antifungal medicines for scalp, nail or widespread infections
• Tips to prevent it coming back: keeping skin dry, changing socks and treating shoes

Where it is offered

Fungal infections Q&A

Related care

• Nail fungus
• Rashes
• Folliculitis and ingrown hairs
• Excessive sweating (hyperhidrosis)