The document lists and describes various conditions that can present as white lesions in the oral cavity. These include leukoplakia, hairy leukoplakia, lichen planus, lichenoid reactions, linea alba, nicotinic stomatitis, uremic stomatitis, cinnamon contact stomatitis, chemical burns, candidiasis, chronic biting, geographic tongue, hairy tongue, furred tongue, materia alba of the gingiva, Fordyce's granules, leukoedema, white sponge nevus, dyskeratosis congenita, pachyonychia congenita, focal palmoplantar and oral mucosa hyperkeratosis syndrome,