Psoriatic Arthritis and Psoriasis Treatment Decision Aid

Prior to the interventional study, we will develop a decision aid using design thinking. In
this interventional study, we will implement and test a patient-centered decision aid for
therapy selection among patients with psoriasis and/or psoriatic arthritis who are starting
or switching to a new medication.

Inclusion Criteria:

1. Age 18 years or older

2. Diagnosis of psoriasis (as confirmed by dermatologist) or psoriatic arthritis (as
confirmed by rheumatologist)

3. Treated at Penn

In addition to the above, for the observation and implementation phases of the study:

4. Initiation of a new psoriasis or psoriatic arthritis treatment

- Biosimilars that have been approved by the FDA and available on the US market
will similarly be eligible for participation

- Patients may be taking other traditional DMARDs.

- A washout period is not required.

Exclusion Criteria:

1. Unable to give informed consent

2. Youth, under the age of 18 years

3. Patients without psoriasis or psoriatic arthritis

4. Not being treated at a Penn clinic

In addition to the above, for the observation and implementation phases of the study:

5. Not starting or switching to a new medication