Psoriasis 101: Understanding Plaques, Triggers, and a Dermatologist’s Guide to Managing Flares Effectively

At Advanced Dermatology & Cosmetic Institute, we regularly see patients who feel frustrated and self-conscious about the thick, scaly patches that appear on their skin. If you’ve noticed persistent red or discolored plaques with silvery scales—often on your elbows, knees, scalp, or lower back—you’re far from alone. Psoriasis is a common, chronic autoimmune condition that affects millions of people. While there’s no cure yet, today’s treatments can effectively control symptoms and help you achieve clearer, more comfortable skin.

We created this guide to help you understand what’s happening with your skin, identify potential triggers (especially relevant for those of us in Minnesota), and learn practical management strategies. As with our Eczema 101 post, the goal is to empower you with knowledge and encourage you to seek personalized care when needed.

What Is Psoriasis?

Psoriasis occurs when your immune system mistakenly speeds up the skin cell life cycle. Normal skin cells take about a month to mature and shed, but in psoriasis, this process happens in just 4-5 days. The result is a buildup of skin cells that form raised, inflamed plaques.

It’s not just a skin condition—it’s systemic, meaning it can influence overall health and is linked to higher risks of conditions like psoriatic arthritis, cardiovascular disease, metabolic syndrome, and more. Genetics play a significant role (it often runs in families), but environmental factors trigger flares in those who are predisposed.

Common Types of Psoriasis

• Plaque Psoriasis (most common, ~80-90% of cases): Raised, red patches covered with silvery-white scales. Often appears symmetrically on elbows, knees, scalp, and trunk.
• Guttate Psoriasis: Small, drop-like spots, frequently triggered by strep throat infections. More common in children and young adults.
• Inverse (Flexural) Psoriasis: Smooth, red patches in skin folds (armpits, groin, under breasts) without heavy scaling.
• Pustular Psoriasis: White pustules (pus-filled bumps) on red skin, often on hands/feet or more widespread.
• Other forms: Erythrodermic (widespread redness covering large areas—medical emergency) and nail psoriasis (pitting, crumbling, or separation of nails).

You can have more than one type, and symptoms can vary over time.

Symptoms and Appearance

Typical signs include:

• Thick, raised, inflamed plaques with well-defined borders.
• Silvery or white scales (may be less obvious on darker skin tones, appearing more violet, brown, or gray).
• Itching, burning, or stinging (though often less intensely itchy than eczema).
• Dry, cracked skin that may bleed.
• Nail changes (pitting, thickening, discoloration).
• In some cases, joint pain/stiffness (psoriatic arthritis).

Psoriasis plaques are often symmetrical and favor extensor surfaces (outer elbows/knees) rather than skin folds.

Psoriasis vs. Eczema: How to Tell the Difference

A dermatologist can provide a definitive diagnosis, sometimes with a skin biopsy if needed.

What Triggers Psoriasis Flares?

Common triggers include:

• Stress — Emotional or physical.
• Infections — Especially strep throat (guttate flares).
• Skin injury (Koebner phenomenon) — Cuts, scrapes, sunburns, or tattoos.
• Medications — Beta-blockers, lithium, antimalarials, etc.
• Lifestyle — Smoking, heavy alcohol use.
• Weather — Cold, dry air and low humidity, very common in Minnesota winters. Indoor heating dries skin further, and reduced sunlight can worsen symptoms for some.

Tracking your personal triggers in a journal can help you avoid or minimize flares.

A Step-by-Step Guide to Managing Psoriasis

1. Gentle Daily Skincare Routine

• Use fragrance-free, gentle cleansers. Avoid hot showers—lukewarm water is kinder to your skin.
• Moisturize immediately after bathing while skin is still damp. Look for thick creams or ointments with ceramides, petrolatum, or urea to lock in moisture and repair the barrier.
• Apply treatments as directed (often after moisturizing or as prescribed).
• Mild exfoliating creams such as alpha-hydroxy acid or poly-hydroxy lotions, retinol or salicylic acid to remove scale.

2. Topical Treatments

First-line options often include corticosteroids (various strengths), vitamin D analogues, combination products, tazarotene, roflumilast (good for inverse psoriasis), or coal tar.

3. Phototherapy (Light Therapy)

Narrowband UVB treatments, available in-clinic, are highly effective for moderate psoriasis and can be combined with topicals.

4. Systemic and Biologic Medications

For moderate-to-severe cases or when topicals aren’t enough: oral medications, injectables, or advanced biologics that target specific immune pathways. These have transformed outcomes for many patients. Your provider can discuss these options with you.

5. Lifestyle Support

• Manage stress through exercise, meditation, or therapy.
• Maintain a healthy weight, quit smoking, and limit alcohol.
• Use a humidifier in winter to combat dry indoor air.
• Protect skin from injury and practice consistent sun protection (short, controlled exposure may help some, but sunburn triggers flares).

Consistency is key—many patients see the best results with a combination approach tailored to their specific type and severity.

When to See a Dermatologist

Don’t wait if:

• Over-the-counter options aren’t controlling your symptoms.
• Flares are frequent, widespread, or impacting your sleep/quality of life.
• You notice joint pain, nail changes, or signs of infection.
• Psoriasis is affecting your emotional well-being.

Early, personalized intervention can prevent complications and improve long-term outcomes.

Living Well with Psoriasis

While psoriasis is lifelong, it doesn’t have to define you. Treatments are better than ever, and many people achieve significant clearing or long periods of remission. At our clinics, we focus on comprehensive care that addresses both the skin and the broader impact on your life.

If you’re dealing with psoriasis or suspect you might be, we’re here to help. Our team at Advanced Dermatology & Cosmetic Institute in Edina, Waconia, and Shakopee offers the latest diagnostic and treatment options in a compassionate environment.

Call us at (952) 915-6000 or book an appointment online today. We’ll work with you to create a plan that fits your needs and lifestyle.