Cellulitis of the foot is a bacterial infection of the skin on the feet that causes swollen areas that are hot and tender to the touch, states Healthline. Cellulitis usually affects the surface of the skin but can sometimes spread to the underlying tissues of the foot.
If left untreated, cellulitis may spread to the bloodstream or lymph nodes, causing a life-threatening illness, explains Healthline. Additional symptoms of cellulitis include fever and a tight, swollen or glossy appearance of the skin. Sometimes, more serious symptoms, such as chills, sweating, muscle aches and fatigue, are also present. It is important for anyone experiencing any of the above symptoms to seek medical attention as soon as possible.