Oral soft tissue disorders encompass a wide range of conditions that can emerge due to various factors, revealing manifestations of the skin in the mouth (mucous membranes), which includes the gums, tongue, lips and other parts of the mouth (Fig. 58.1). These disorders are diverse in origin and occur due to infections, trauma, autoimmune responses, allergic reactions, nutritional deficiencies, hormonal fluctuations, genetic predispositions, systemic diseases, medication side effects, benign and malignant tumours and even the consequences of inadequate oral hygiene practices. The intricate nature of these disorders highlights the importance of comprehensive examination and diagnosis by oral health professionals to ensure appropriate management and targeted treatments.