Biologics for Psoriasis: What to Know Before You Start

By Kerry Weiss
Reviewed by Allison Truong, M.D.
July 19, 2022

If you’ve been diagnosed with psoriasis or psoriatic arthritis, it’s important to work with your doctor to develop a treatment plan that’s right for you. For some people, that may include a biologic or biosimilar drug.

Biologics are a type of systemic treatment that targets a specific part of the immune system that’s thought to play a role in the disease process. The goal of biologic treatment is to help you gain control of your symptoms and slow or prevent the progression of your condition. Biosimilars are synthetic drugs modeled after FDA-approved biologic drugs, and are thought to be just as effective as biologics. Both these types of drugs are administered by injection or infusion.

Many people have questions before starting biologic or biosimilar treatment. Here’s what to expect when getting started on these medications.