Histopathologic, ultrastructural, and immunologic findings in an oral psoriatic lesion

There has been some controversy over whether psoriasis can involve the oral mucosa. An oral lesion in a 32-year-old man with a psoriatic scalp lesion has been studied by light and electron microscopy and by immunologic methods. Results from each of these three techniques are consistent with previous findings in psoriatic lesions and suggest that oral psoriasis can occur.