Infectious causes include [[Feline Calicivirus|calicivirus]], [[Feline Herpesvirus 1|feline herpesvirus]], panleukopanenia, [[Fungi|fungal]], necrotising stomatitis and [[Leptospirosis - Cats and Dogs|leptospirosis]]. Physical causes may be irritation from [[Periodontal Disease|periodontal disease]], foreign bodies and trauma. Metabolic causes such as [[Kidney Renal Failure - Pathology#Uraemia|uraemia]], vitamin deficiencies and hypoparathyoidism can also be responsible. | Infectious causes include [[Feline Calicivirus|calicivirus]], [[Feline Herpesvirus 1|feline herpesvirus]], panleukopanenia, [[Fungi|fungal]], necrotising stomatitis and [[Leptospirosis - Cats and Dogs|leptospirosis]]. Physical causes may be irritation from [[Periodontal Disease|periodontal disease]], foreign bodies and trauma. Metabolic causes such as [[Kidney Renal Failure - Pathology#Uraemia|uraemia]], vitamin deficiencies and hypoparathyoidism can also be responsible. |