The common canker sore, a recurrent, painful, shallow, round ulcer with a yellowish-gray base and an erythematous halo, not associated with systemic disease.
A systemic vasculitis characterized by recurrent, painful oral and genital aphthous ulcers.
This inflammatory bowel disease can cause deep, linear, 'cobblestone' ulcers in the buccal mucosa and aphthous-like sores.
Chemotherapy can cause severe, painful mucositis with widespread ulceration throughout the oral cavity.
Can cause painless, well-demarcated, erythematous plaques with white striae or central ulceration on the palate or buccal mucosa.
A drug reaction that can recur in the same spot on the oral mucosa as a dusky red patch that blisters and forms an ulcer.
The erosive form presents as painful, chronic, bright red erosions and ulcers, often surrounded by a lacy, white, reticular pattern.
A cytotoxic drug that can cause painful oral ulcers as a sign of toxicity, especially at high doses or with renal impairment.
A low neutrophil count can lead to the development of deep, necrotic, 'punched-out' ulcers on the oral mucosa.
A malignant tumor presenting as a persistent, firm, indurated, or exophytic ulcer that fails to heal.
Primary syphilis presents as a painless, firm chancre (ulcer); secondary syphilis can cause mucous patches or 'snail-track' ulcers.
