Most oral involvement in the mucocutaneous diseases is related mainly to disorders with a prominent immunological component, especially lichen planus and pemphigoid. However, less common conditions such as pemphigus, dermatitis herpetiformis, linear IgA disease, erythema multiforme, chronic ulcerative stomatitis and other conditions may need to be excluded.Diagnosis is initially clinical, based on a full history, general, and oral examination but precise diagnosis can be difficult without further data and therefore biopsy and immunological studies are invariably required to confirm the specific diagnosis. Apart from improving oral hygiene, immunosuppressive therapy is typically required to control many of these conditions.
Most of the mucocutaneous diseases are confined to the stratified squamous epithelia and thus may involve oral, genital and other mucosae and skin. Most of these conditions are acquired and have an immunological basis but there is often a hereditary predisposition.
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