Learn About Psoriasis Treatment Options

Understanding Psoriasis and Why Treatment Matters

Psoriasis is a chronic skin condition affecting approximately 2-3% of the U.S. population, or roughly 7-8 million Americans. The condition occurs when the immune system causes skin cells to build up too quickly, creating thick, scaly patches that may be red, itchy, or painful. These patches can appear anywhere on the body, though they commonly develop on the elbows, knees, scalp, and lower back. Unlike eczema or other skin conditions, psoriasis is not contagious.

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The severity of psoriasis varies widely. Some people experience mild cases with small patches affecting less than 3% of their body surface area, while others develop severe cases covering extensive areas. Psoriasis can also affect joints, a condition called psoriatic arthritis, which impacts roughly 10-30% of people with psoriasis. Beyond physical symptoms, many people report that psoriasis affects their quality of life, including emotional well-being, social interactions, and work productivity.

Understanding your treatment options matters because psoriasis responds differently from person to person. What works well for one individual may not work as well for another, making it important to learn about different approaches. Treatment goals generally focus on reducing inflammation, slowing skin cell turnover, relieving symptoms, and preventing new patches from forming.

• Psoriasis affects roughly 7-8 million Americans
• The condition is chronic, meaning it lasts long-term
• Treatment effectiveness varies by individual
• Multiple treatment approaches exist to address different severity levels

Practical takeaway: Learning about treatment options helps you have informed conversations with your healthcare provider about what might work best for your specific situation.

Topical Treatments: Creams, Ointments, and Lotions

Topical treatments are applied directly to the skin and represent the first-line treatment for mild to moderate psoriasis. These products work by reducing inflammation, slowing skin cell growth, and relieving itching. Topical treatments are often the starting point because they have fewer side effects compared to systemic medications and work directly on affected areas.

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Corticosteroid creams and ointments are among the most commonly prescribed topical treatments. These medications reduce inflammation and itching, with results often visible within days to weeks. The strength of corticosteroids varies, from mild options for sensitive areas like the face to potent formulations for thicker plaques on the elbows and knees. Dermatologists typically recommend using the lowest effective strength for the shortest duration necessary, as long-term use of strong corticosteroids on large areas can cause side effects like skin thinning.

Non-steroidal topical options include vitamin D analogs (calcipotriene), retinoids (tazarotene), and coal tar products. Vitamin D analogs work by slowing skin cell growth and reducing inflammation. Retinoids normalize skin cell growth patterns. Coal tar, an older treatment dating back decades, reduces inflammation and itching, though many people prefer newer options because coal tar can stain clothing and has a distinct odor. Combination products that pair a corticosteroid with a vitamin D analog may provide enhanced results for some individuals.

Newer topical treatments include PDE4 inhibitors (crisaborole) and JAK inhibitors (ruxolitinib cream), which target specific immune pathways without the concerns associated with corticosteroid overuse. These options offer flexibility for treating sensitive areas or for long-term management.

• Corticosteroid creams work quickly but should be used at the lowest effective strength
• Vitamin D analogs slow skin cell growth without steroid-related concerns
• Coal tar products are effective but have cosmetic drawbacks for many users
• Newer targeted treatments like JAK inhibitors offer additional options
• Combination products may enhance effectiveness for some people

Practical takeaway: Topical treatments work best for patches covering less than 10% of your body surface. If your psoriasis covers larger areas, talk with your dermatologist about combining topical treatments with other approaches.

Phototherapy and Light-Based Treatments

Phototherapy uses specific wavelengths of light to treat psoriasis by slowing skin cell growth and reducing inflammation. This treatment is particularly valuable for moderate to severe psoriasis affecting larger body areas. Phototherapy works differently than topical treatments because it addresses the immune system dysfunction underlying psoriasis rather than just treating the surface symptoms.

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Narrow-band UVB (NB-UVB) phototherapy is the most commonly used light-based treatment. During sessions, typically lasting a few minutes, your whole body or specific affected areas are exposed to controlled UVB light in a medical setting. Most protocols involve 2-3 sessions per week for several weeks. Research shows that 75% of patients experience significant improvement with consistent NB-UVB treatment. Sessions can be discontinued once clear skin is achieved, though some people benefit from ongoing maintenance sessions once or twice per week.

Excimer laser phototherapy targets specific plaques rather than treating your entire body. This approach works well when psoriasis affects limited areas, allowing treatment without exposing healthy skin to therapeutic light. The 308-nanometer excimer laser can clear plaques in fewer sessions than whole-body phototherapy, sometimes showing results in 4-8 weeks.

PUVA (psoralen plus UVA) combines a light-sensitizing medication called psoralen with long-wave UVA light. Though less commonly used than NB-UVB due to potential long-term skin cancer risk, PUVA may be considered for certain cases. Emerging therapies like excimer LED light boxes are becoming available for home use, offering convenience for maintenance therapy after initial professional treatment.

• NB-UVB phototherapy treats up to 75% of cases effectively
• Sessions typically take 2-3 minutes and occur 2-3 times weekly
• Excimer laser targets specific plaques without exposing whole-body skin
• Phototherapy addresses immune system dysfunction causing psoriasis
• Home light therapy devices are emerging but require medical guidance

Practical takeaway: Phototherapy works best when combined with topical treatments and can be done on an outpatient basis at a dermatology clinic. Ask about maintenance schedules, as some people need ongoing light therapy to prevent flares.

Systemic Medications: Pills and Injections

Systemic medications work throughout your entire body by targeting immune system pathways that drive psoriasis. These treatments are typically recommended when psoriasis covers more than 10% of your body surface, affects quality of life significantly, or doesn't respond adequately to topical treatments and phototherapy. Systemic medications include traditional drugs and newer biologic therapies.

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Traditional systemic medications like methotrexate, acitretin, and cyclosporine have been used for decades. Methotrexate works by slowing skin cell growth and reducing immune activity, often providing results within weeks to months. Acitretin is an oral retinoid that normalizes skin cell growth. Cyclosporine suppresses immune responses but is typically used short-term due to potential side effects. These traditional medications require regular blood tests to monitor liver and kidney function, and some have restrictions for people planning pregnancy.

Biologic medications represent a major advancement in psoriasis treatment. These drugs target specific immune system proteins or cells that trigger psoriasis. Examples include TNF-alpha inhibitors (etanercept, adalimumab, infliximab), IL-17 inhibitors (secukinumab, ixekizumab), IL-23 inhibitors (guselkumab, risankizumab), and others. Biologics are often highly effective, with some showing up to 80-90% improvement in skin clearing. Most biologics are given by injection (either self-injected or at medical offices) or intravenous infusion. Treatment typically begins with induction dosing followed by maintenance doses, sometimes as infrequent as once monthly or every three months.

JAK inhibitors (baricitin