Onychomycosis or nail fungus can occur on fingernails or toenails, but it is far more common on toenails because, like other fungi, onychomycosis thrives in dark, moist environments like the environment that results from feet perspiring in shoes and socks all day.

Nail fungus can grow underneath or on top of the nail, and it forces the nail up off of the nail bed making the nail thick, crumbly and discolored. The discoloration can range from yellow to brown and it can easily spread from the infected nail to the other nails on the foot.

There are a number of over the counter treatments that can be applied directly to the affected area and do not have the side effects of oral medications that are on the market, but it is always best to have a dermatologist examine the condition to ensure that it is not some other type of nail disease mimicking onychomycosis.

If you are tired of hiding thick, crumbly and discolored toenails, contact O'Donoghue Dermatology today to schedule a consultation.