Aphthous ulcer
Single ulceration with an erythematous halo surrounding a yellowish fibrinopurulent membrane.This is a picture of aphthous ulcers which are often confused with cold sores, but they are not caused by the herpes virus. Apthous ulcers can occur anywhere in the mouth but do not involve the outside of the lip. Someone who has herpetic stomatitis (herpes ulcers throughout the mouth caused by an initial oral herpes infection) may have ulcers in the mouth, but they will typically have cold sores on the lip also.
Glossitis
Smooth red tongue secondary to atrophy of the papillaeGlossitis
A red, smooth tongue may be seen in patients with nutritional deficiencies.Herpes labialis
Typical appearance of cold sores; to begin with there is formation of vesicles followed by rupture with the ulcer having hyperemic borders & covered by honey-colored scales.Gingivostomatitis Herpetica
acute herpetic gingivostomatitis, characterized by vesicles and ulcerations throughout the oral cavity including the lips.Vesicle in the epidermis due to squamous cell ncrosis & acantholysis
Characteristic nuclear changes: Multinucleation, Molding, Chromatin margination
Herpes simplex infection of the lip
Oral thrush in a child
Oral thrush in an adultOral candidiasis