Toenail conditions can stem from many different sources. The most common cause of toenail problems is fungal infection. Other causes are abnormal growth, trauma, and skin conditions such as psoriasis.

What is going on in the body?

Toenail conditions are usually recognized when a person has pain or odd sensations while walking or exercising.

What are the causes and risks of the condition?

Different toenail conditions present different risks. These risks can range from chronic low-grade pain to life-threatening infection.

Fungal infections, bacterial infections, damage to the nail from injury and other illnesses within the body may cause nail problems. Skin conditions like psoriasis, which causes a flaking of the skin around the elbows and hairline, can first show up as thickened nails. Other possible causes include several rare dermatological problems.