Study Status: Completed
Recruit Status: Completed
Study Type: Observational
Official Title: The Evaluation of Oral Acitretin in the Treatment of Psoriasis, Cutaneous Disorders of Keratinization, Multiple Basal Cell Carcinomas and Other Retinoid Responsive Diseases
Brief Summary: This is a continuing study which evaluates the long-term safety and efficacy of oral acitretin in an open manner in the treatment of psoriasis, cutaneous disorders of keratinization, multiple basal cell carcinomas and other retinoid responsive diseases.