Symptoms of stomatitis include ulcers, herpes or pseudomembranes of the oral mucosa. Stomatitis is an inflammatory reaction of the oral mucosa, usually due to bacterial, viral or fungal infections, commonly known as ulcerative stomatitis, herpetic stomatitis, drug allergic stomatitis and Candida stomatitis. Ulcerative stomatitis is usually seen in the tongue and buccal mucosa. The disease starts with congestion or edema and slowly develops into a vesicular ulcer with a white or yellow pseudomembrane formed by inflammatory exudation and a painful local reaction. It usually heals spontaneously within a week or so. Herpetic stomatitis is usually caused by herpes simplex virus infection, and it occurs in the corners of the mouth, initially as clusters of pinpoint papules that slowly break down to form yellow crusts, sometimes with severe pain or restricted mouth opening. Drug allergic stomatitis is most often caused by taking specific medications and usually develops twenty-four hours after taking the medication, with congestion or edema in the mucosal area. Candida stomatitis is most often seen as a result of fungal infections. The white pseudomembranous changes that appear in the mucosal area of newborns can be erased and interfere with normal feeding, and the infant will tend to cry and refuse to eat. Therefore, stomatitis can appear as ulcers in the mucosal area, or edema and crust, and sometimes local pain.