Psoriasis 101: Dermatologist-Backed Answers to Your Most Common Questions

Author: The Dermatology Specialists

Woman applying lotion for psoriasis

Psoriasis is a long-term, immune-mediated skin condition that affects over 7.5 million adults in the United States. Characterized by inflamed, scaly patches of skin, psoriasis can significantly impact physical comfort and emotional well-being. While the disease is chronic and cannot be cured, modern treatments and supportive care can help individuals achieve clear or nearly clear skin.

In this guide, we answer common questions about psoriasis, outline proven treatment strategies, and share dermatologist-recommended tips for managing symptoms and preventing flare-ups.

What Is Psoriasis and What Causes It?

Psoriasis is an autoimmune condition in which the immune system mistakenly attacks healthy skin cells, speeding up their life cycle. This causes a buildup of cells on the surface of the skin, which can lead to thick, red patches with silvery scales.

Types of Psoriasis:

  • Plaque Psoriasis: The most common form, accounting for roughly 80-90% of cases. It presents as raised, inflamed plaques typically on the scalp, elbows, knees, and lower back.
  • Guttate Psoriasis: Appears as small, dot-like lesions. Often triggered by infections like strep throat.
  • Inverse Psoriasis: Affects skin folds and appears as smooth, shiny red lesions.
  • Pustular Psoriasis: Characterized by white pustules surrounded by inflamed skin with a red appearance.
  • Erythrodermic Psoriasis: A rare and severe form causing widespread redness and scaling. Requires immediate medical attention.

Learn how Psoriasis can affect men and women differently in our blog: Unpacking Psoriasis

Causes and Triggers: While the exact cause of psoriasis remains unknown, it is believed to result from a combination of genetics and environmental factors.

Triggers may include:

  • Stress
  • Infections (e.g., strep throat)
  • Skin injury (Koebner phenomenon)
  • Cold, dry weather
  • Smoking
  • Heavy alcohol use
  • Certain medications, including beta-blockers and lithium

[Source: American Academy of Dermatology]

Symptoms and Associated Conditions

Common Symptoms:

  • Red patches of skin covered with thick, silvery-white scales
  • Dry, cracked skin that may bleed
  • Itching, burning, or soreness
  • Thickened, pitted, or ridged nails
  • Scalp scaling and dandruff-like flaking

Psoriatic Arthritis (PsA): About 1 in 3 people with psoriasis develop psoriatic arthritis, which causes joint pain, stiffness, and swelling. Early diagnosis is critical to preventing joint damage.

Other Health Risks: Psoriasis is linked to several other health issues, including:

  • Cardiovascular disease
  • Type 2 diabetes
  • Obesity
  • Anxiety and depression
  • Inflammatory bowel disease

To learn more book a consultation with a board-certified dermatologist.

[Source: Cleveland Clinic]

How Is Psoriasis Diagnosed?

A dermatologist can typically diagnose psoriasis through a physical examination and detailed medical history. In some cases, a skin biopsy may be performed to rule out other conditions such as eczema or fungal infections.

There is no specific blood test for psoriasis, but screening for associated conditions like psoriatic arthritis, cardiovascular disease, and depression is often recommended.

[Source: American Academy of Dermatology, Psoriasis.org]

Treatment Options: What Really Works

Topical Treatments:

  • Corticosteroids: Most commonly prescribed for mild to moderate psoriasis.
  • Newer, non-steroidal topical anti-inflammatories (roflumilast, tapinarof).
  • Vitamin D analogs: Help slow skin cell growth.
  • Salicylic acid: Promotes shedding of scales.
  • Coal tar: Reduces itching and inflammation.

Phototherapy:

  • UVB Light Therapy: Effective for widespread psoriasis.
  • PUVA Therapy: Combines psoralen with UVA light.

Systemic Medications:

  • Deucravacitinib and Apremilast – oral immunomodulatory agents decrease systemic inflammation.

Biologic Therapies: Target specific immune system components:

  • TNF-alpha inhibitors (e.g., adalimumab)
  • IL-17 inhibitors (e.g., secukinumab)
  • IL-23 inhibitors (e.g., risankizumab)

Learn More: Explore various treatments available to smooth skin and eliminate psoriasis.

[Source: American Academy of Dermatology, Cleveland Clinic]

Expert Q&A: Board-Certified Dermatologist Insights on Biologics and Psoriatic Arthritis

We asked TDS board-certified dermatologist Dr. Pierce Deng to weigh in on two of the most important concerns for patients living with psoriasis. Keep scrolling for our interview with Dr. Deng. 

What are the most effective treatment options for someone with moderate to severe plaque psoriasis?

“For moderate to severe plaque psoriasis, the most effective treatments usually include biologic injections and oral systemic drugs. These newer medications can result in incredible improvements in skin inflammation with many patients even experiencing complete clearance of their psoriasis. The best and most appropriate treatment for a person will depend on the individual’s overall health, lifestyle, and symptoms, as well as their own unique biology.”

How do biologics differ from traditional psoriasis medications?

“Biologics are a newer type of medication that target specific parts of the immune system that drive psoriasis, offering a more precise approach with fewer broad side effects. Practically speaking, this means that biologics are generally much more effective at getting rid of the rash and also have much less side effects than traditional medications used for psoriasis such as methotrexate or cyclosporine.”

When should a person with psoriasis be evaluated for psoriatic arthritis?

“Anyone with psoriasis who experiences joint pain, stiffness (especially in the mornings), swelling (especially in the fingers), or nail changes should be evaluated for psoriatic arthritis. I regularly evaluate all my patients with psoriasis for signs or symptoms of psoriatic arthritis because early detection is important for preventing long-term joint damage which can be permanent if not properly treated.”

Click here to book an appointment with Dr. Deng.

Lifestyle Tips to Prevent Flare-Ups

Stress Management:

  • Practice yoga, meditation, or breathing exercises
  • Maintaining exercise and sleep routines
  • Mental health counselling and support

Skin Care Routine:

  • Use fragrance-free moisturizers
  • Avoid hot showers and harsh soaps
  • Pat skin dry and moisturize immediately after bathing

Dietary Considerations:

  • Maintain a healthy weight
  • Eat anti-inflammatory foods, i.e., leafy greens, fatty fish, and nuts
  • Limit alcohol and processed foods

Environmental Tips:

  • Use a humidifier during cold, dry months
  • Protect skin from sunburn with broad-spectrum sunscreen (Yes, even when it’s cloudy)

[Source: American Academy of Dermatology, Mayo Clinic]

Frequently Asked Questions (FAQ)

Q: Is psoriasis contagious?
A: No, it is not contagious.

Q: Can it go away on its own?
A: Psoriasis is chronic, but symptoms can go into remission.

Q: What makes psoriasis worse?
A: Triggers like stress, infections, and weather changes.

Q: Can diet help control psoriasis?
A: Yes, anti-inflammatory diets may help reduce flare-ups.

Q: Should I see a dermatologist?
A: Yes, early treatment leads to better outcomes.

[Source: Psoriasis.org]

Additional Resources

For more information on Psoriasis:

Conclusion

While psoriasis can be challenging, it is manageable with the right combination of medical treatment, daily care, and lifestyle changes. Early diagnosis and personalized treatment are key. Consult a board-certified dermatologist to develop a plan that meets your specific needs and helps you regain control of your skin health.

For more expert insights, schedule a visit with The Dermatology Specialists or explore our Skin Academy on chronic skin conditions.