Inclusion Criteria:  Diagnosis of nail psoriasis for at least 3 months preceding study entry Diagnosis or history of plaque psoriasis or psoriatic arthritis A female participant of childbearing potential must use appropriate contraceptive measures during the study period A female participant of childbearing potential must have a negative urine pregnancy test result at screening Written informed consent must be obtained before any study procedure is performed  Exclusion Criteria:  Pregnant or breastfeeding Diagnosis of other active skin or nail diseases or skin or nail infections (bacterial, fungal, or viral) that may interfere with evaluation of skin or fingernail psoriasis History or evidence of a clinically significant disorder, condition, or disease that would pose a risk to patient safety or interfere with the study evaluation, procedures, or completion in the judgment of the investigator