Behcet's Disease is a chronic multisystemic inflammatory disorder that commonly affects the oral mucosa, skin, and joints.

Candidiasis is a fungal infection caused by Candida species, which is commonly seen in HIV-infected individuals due to impaired immune function.

Oral lichen planus is an autoimmune condition that affects the oral mucosa. It has been associated with various systemic diseases, including Hepatitis C.

Cobblestone mucosa is a distinct oral manifestation of Crohn's Disease, characterized by a cobblestone-like appearance of the buccal mucosa.

Erythema multiforme is a skin and mucosal condition that can be triggered by various factors, including Herpes Simplex Virus infection.

Xerostomia, or dry mouth, is a common oral manifestation of Sjögren's Syndrome, an autoimmune disease that affects the exocrine glands.

Thrombocytopenia, a condition characterized by low platelet count, can lead to oral petechiae and ecchymoses due to impaired hemostasis.

Pemphigus vulgaris is an autoimmune blistering disease that affects the skin and mucous membranes, including the oral mucosa. It is characterized by the formation of bullae, which are fluid-filled blisters.

Oral hairy leukoplakia is a distinctive white lesion that occurs on the lateral borders of the tongue in HIV-infected individuals.

Periodontal disease, characterized by inflammation and destruction of the tissues surrounding the teeth, is a common oral manifestation of diabetes mellitus.

Oral thrush, a fungal infection caused by Candida species, is commonly seen in HIV-infected individuals due to impaired immune function.

Enamel hypoplasia, a condition characterized by defects in the enamel of the teeth, can be a manifestation of celiac disease.

Oral lichenoid lesions, characterized by white, lace-like lesions on the oral mucosa, can be associated with Hepatitis C infection.

Oral ulcers are a common oral manifestation of systemic lupus erythematosus, an autoimmune disease that affects multiple organs.

Angular cheilitis, characterized by inflammation and cracking at the corners of the mouth, can be a manifestation of iron deficiency anemia.