A Study Comparing Tazarotene Cream 0.05% to TAZORAC® (Tazarotene) Cream 0.05% and Both to a Placebo Control in the Treatment of Plaque Psoriasis

Inclusion Criteria: * Have a definite clinical diagnosis of stable (at least 6 months) plaque psoriasis, involving at least 2% and no more than 20% of the body surface area (BSA) (not including the scalp and intertriginous areas) * Have a minimum plaque elevation at the target lesion site of at least moderate severity (grade ≥ 3 on the Psoriasis Area Severity Index \[PASI\]). The most severe lesion at baseline should be identified as the target lesion * Have an Investigator's Global Assessment (IGA) of disease severity of at least moderate (score ≥ 3) as an overall assessment of all lesions to be treated. Exclusion Criteria: * A female subject who is pregnant, nursing, planning a pregnancy, or does not agree to use an acceptable form of birth control within the study participation period * Have a current diagnosis of unstable forms of psoriasis in the treatment area, including pustular, guttate, exfoliative or erythrodermic psoriasis * Have a history of psoriasis unresponsive to topical treatments