Medical Dermatology · Psoriasis Treatment

Psoriasis: An Autoimmune Condition That Needs the Right Treatment Plan, Not Just a Cream

Psoriasis isn't dry skin, and over-the-counter moisturizer won't fix it. Here's what actually causes it, how the different types show up, and how it's treated at every stage of severity.

Reviewed by Dr. Sam Abaza. Diplomate, American Board of Physician Specialties

6 min read · 7 scientific references

7.5 million

Americans living with psoriasis. National Psoriasis Foundation.

30%

of psoriasis patients also develop psoriatic arthritis. National Psoriasis Foundation.

20–30 & 50–60

Peak age ranges when psoriasis most commonly first appears. American Academy of Dermatology.

60%

of patients report stress as a flare trigger. Clinical study, JAAD.

WHAT IS PSORIASIS

What Is Psoriasis?

Psoriasis is a chronic autoimmune condition that speeds up the skin's normal cell turnover cycle. Where healthy skin cells take about a month to cycle from creation to shedding, psoriasis compresses that into three to seven days. The skin can't shed the excess cells fast enough, so they pile up on the surface as the thick, scaly, often silvery-white patches most people associate with the condition. It's not contagious, it's not caused by poor hygiene, and it doesn't go away with a moisturizer — it's an immune system issue, and it's managed, not cured.

What Causes a Psoriasis Flare?

Psoriasis develops when the immune system mistakenly attacks healthy skin cells, triggering inflammation and that accelerated cell cycle. Genetics play a real role — about a third of patients have a family member with the condition — but genetics alone don't explain flares. Most patients have periods of remission interrupted by flares set off by identifiable triggers: stress, skin injury (a cut, sunburn, or even a tattoo can trigger new plaques at the injury site, known as the Koebner phenomenon), infections (strep throat is a documented trigger for guttate psoriasis specifically), certain medications, cold and dry weather, and smoking or heavy alcohol use.

Types of Psoriasis at a Glance

Who is most at risk

Family history

Genetics are the single largest risk factor. Having one parent with psoriasis roughly doubles your risk; two increases it further.

High Stress Levels

Stress doesn't cause psoriasis, but it's one of the most commonly reported flare triggers

Smokers and heavy drinkers

Both are independently associated with more severe disease and reduced response to treatment.

Patients who are overweight

Excess weight is linked to more severe psoriasis and higher rates of inverse psoriasis specifically.

Recent skin injury

Cuts, sunburns, vaccinations, and tattoos can trigger new plaques exactly where the skin was injured.

Certain medications

Lithium, some blood pressure medications, and antimalarials are documented triggers — don't stop a prescription without talking to your doctor.

When you should schedule a visit

Any new, persistent patch of red, scaly, or thickened skin that hasn't resolved in a few weeks.
Scalp scaling being mistaken for severe dandruff that isn't responding to dandruff shampoo.
Joint pain or stiffness alongside skin symptoms, which can signal psoriatic arthritis.
Widespread pustules, fever, or skin suddenly turning significantly redder over a large area.
Plaques that are cracking, bleeding, or showing signs of infection.
Symptoms affecting your confidence, sleep, or daily life — effective treatment exists at every severity level.

How is psoriasis actually treated?

Treatment is matched to severity and typically escalates in steps rather than jumping straight to the strongest option. Topical treatments — corticosteroids, vitamin D analogues, and retinoids — are the first line for mild to moderate plaque psoriasis affecting a limited area. Phototherapy, controlled UVB light exposure performed in-office, is often added when topicals alone aren't enough. Systemic treatments, including oral medications and biologic injections that target specific immune pathways, are reserved for moderate to severe psoriasis or when joint involvement is present. The right combination depends on how much skin is affected, which type you have, whether joints are involved, and how you've responded to treatment before.

Common questions about psoriasis

Is psoriasis contagious? No. Psoriasis is an autoimmune condition, not an infection, and cannot be spread through contact with someone who has it.

Will psoriasis go away on its own? Psoriasis is a chronic condition with periods of flare and remission, but it doesn't resolve permanently on its own. Treatment manages symptoms and extends remission periods; stopping treatment often leads to flares returning.

Is psoriasis the same as eczema? No. Both cause red, irritated skin, but psoriasis is autoimmune with a distinctive silvery scale and clearer plaque borders, while eczema is tied to skin barrier dysfunction and tends to be itchier with less defined edges. An in-person exam is the reliable way to tell them apart.

Can diet affect psoriasis? Some patients report improvement with anti-inflammatory dietary changes, and obesity is linked to more severe disease, but no single diet reliably treats psoriasis on its own. Diet can be a helpful complement to medical treatment, not a replacement for it.

Does psoriasis increase risk of other health conditions? Yes. Psoriasis is linked to a higher risk of psoriatic arthritis, cardiovascular disease, and metabolic syndrome, which is part of why an accurate diagnosis and ongoing management matter beyond the skin itself.

Sources cited on this page

National Psoriasis Foundation. Psoriasis statistics and facts.
American Academy of Dermatology. Psoriasis: overview, causes, and types.
Griffiths CEM, et al. Psoriasis. The Lancet. Clinical review.
National Psoriasis Foundation. Psoriatic arthritis and comorbidities.
Clinical study on stress as a flare trigger in plaque psoriasis. Journal of the American Academy of Dermatology.
American Academy of Dermatology. Biologics and systemic treatment guidelines for psoriasis.
Mayo Clinic. Psoriasis: symptoms, causes, and treatment options.

This page is for general educational purposes and does not replace an in-person medical evaluation. Diagnosis and treatment recommendations depend on an in-person exam and your specific history. Schedule a consultation with Dr. Abaza to discuss your specific concern.

BOTTOM LINE

A chronic condition, a real treatment plan

Psoriasis is a lifelong autoimmune condition, but it's a highly manageable one with today's treatment options — from topicals to phototherapy to biologics. Dr. Abaza treats psoriasis patients at both our Diamond Bar and Harbor locations, matching treatment to the type and severity you're actually dealing with.