Changes

*Hypersensitivity to oral antigens

*Hypersensitivity to oral antigens

*Bacteria

*Bacteria

**Porphyromonas

**''Porphyromonas'' sp

**''Haemobartonella henselae''

**''Haemobartonella henselae''

*Viruses

*Viruses

===Biopsy===

===Biopsy===

Biopsies should be taken to rule out any malignant neoplasms (ie squamous cell carcinoma) or other pathology ( ie eosinophilic granuloma)

Biopsies should be taken to rule out any malignant neoplasms (ie squamous cell carcinoma) or other pathology ( ie eosinophilic granuloma) and to confirm the diagnosis. Histologically, dense band-like submucosal lymphocytic-plasmacytic infiltrates are reported with this condition.