Psoriasis Overview and Treatment

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Questions and Answers

What is the primary mechanism causing psoriasis at the cellular level?

  • Decreased epidermal cell turnover rate
  • Inhibition of T-cell activity
  • Increased melanin production in the epidermis
  • Hyperproliferation of keratinocytes (correct)

Which type of psoriasis accounts for the majority of psoriatic patients?

  • Pustular psoriasis
  • Plaque psoriasis (correct)
  • Inverse psoriasis
  • Guttate psoriasis

What is one of the associated co-morbidities in moderate to severe psoriasis?

  • Skin cancer
  • Asthma
  • Metabolic syndrome (correct)
  • Diabetes insipidus

Which of the following is a common triggering factor for psoriasis?

<p>Cold weather (D)</p> Signup and view all the answers

In which areas of the body does chronic plaque psoriasis most commonly manifest?

<p>Extensor surfaces of elbows and knees (C)</p> Signup and view all the answers

What age group is associated with Type I onset of psoriasis?

<p>Youth (D)</p> Signup and view all the answers

Which of the following statements correctly describes the morphology of plaque psoriasis?

<p>It has well-demarcated red/pink plaques with silver-white scaling. (B)</p> Signup and view all the answers

What percentage of the worldwide population is estimated to be affected by psoriasis?

<p>1 – 2% (A)</p> Signup and view all the answers

What characteristic is most commonly associated with chronic plaque psoriasis?

<p>Accounts for 80-90% of psoriatic patients (B)</p> Signup and view all the answers

Which type of psoriasis is characterized by lesions that commonly occur in skin folds and lack visible scaling?

<p>Inverse psoriasis (A)</p> Signup and view all the answers

Which nail sign is NOT commonly associated with psoriatic nail disease?

<p>Hyperpigmentation (D)</p> Signup and view all the answers

What percentage of psoriatic arthropathy cases are asymmetric?

<p>60-70% (C)</p> Signup and view all the answers

Which condition is characterized by a shower of discrete lesions following a streptococcal throat infection?

<p>Guttate psoriasis (B)</p> Signup and view all the answers

What is a notable feature of plantar psoriasis?

<p>Presence of sterile pustules (D)</p> Signup and view all the answers

Which of the following best describes the appearance of well-demarcated lesions in chronic plaque psoriasis?

<p>Well-defined erythematous plaques with scales (A)</p> Signup and view all the answers

What percentage of psoriasis patients is reported to have genital involvement?

<p>45% (C)</p> Signup and view all the answers

Which treatment is contraindicated for traditional systemic treatment of psoriasis?

<p>Retinoids (Acitretin) (A)</p> Signup and view all the answers

What is the role of IL-17 inhibitors in psoriasis treatment?

<p>They are used to suppress IL-17 signaling in psoriasis. (A)</p> Signup and view all the answers

Which of the following is a recently approved monotherapy for generalized pustular psoriasis (GPP)?

<p>Spesolimab (D)</p> Signup and view all the answers

What condition refers to the inflammation of joints in patients with psoriasis?

<p>Psoriatic arthropathy (B)</p> Signup and view all the answers

Which medication is a selective tyrosine kinase 2 inhibitor approved for moderate to severe plaque psoriasis?

<p>Deucravacitinib (B)</p> Signup and view all the answers

What is a common site for psoriasis manifestations?

<p>Elbows (D)</p> Signup and view all the answers

Which of the following medications is an oral phosphodiesterase 4 inhibitor approved for psoriasis?

<p>Apremilast (B)</p> Signup and view all the answers

Which biological agent is classified as an anti-TNF alpha therapy?

<p>Adalimumab (B)</p> Signup and view all the answers

What condition is classified as a dermatological emergency due to its potentially life-threatening nature?

<p>Generalised Pustular Psoriasis (B)</p> Signup and view all the answers

Which of the following symptoms is NOT associated with Generalised Pustular Psoriasis?

<p>Persistent cough (B)</p> Signup and view all the answers

Which treatment is NOT typically recommended for Generalised Pustular Psoriasis?

<p>Topical corticosteroids (D)</p> Signup and view all the answers

What is a common complication of Erythrodermic Psoriasis?

<p>Fluid and protein loss (D)</p> Signup and view all the answers

Which of the following is a primary indication for systemic therapy in psoriasis?

<p>Chronic plaque psoriasis affecting &gt;10-15% BSA (A)</p> Signup and view all the answers

Which novel topical therapy for plaque psoriasis was FDA approved in July 2022?

<p>Roflumilast cream (D)</p> Signup and view all the answers

Which treatment modality is generally considered first-line for mild to moderate localized psoriasis?

<p>Topical agents (A)</p> Signup and view all the answers

What systemic complication can arise from Erythrodermic Psoriasis?

<p>Hypothermia (B)</p> Signup and view all the answers

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Flashcards

What is Psoriasis?

Psoriasis is a chronic inflammatory skin condition characterized by an accelerated turnover of skin cells, leading to the formation of thick, scaly patches called plaques.

What causes Psoriasis?

It is a complex disease involving immune system dysregulation, where T-cells play a key role in the inflammation.

What is Plaque Psoriasis?

Plaque psoriasis is the most common type. It presents as well-defined, raised, red plaques covered with silvery scales. These plaques are typically found on elbows, knees, scalp, and trunk.

What is Guttate Psoriasis?

Guttate psoriasis is characterized by small, drop-shaped lesions, often triggered by strep throat infection. It usually affects children and young adults.

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Where does Inverse Psoriasis occur?

Inverse psoriasis occurs in skin folds, such as the armpits and groin. It presents as smooth, red patches without scales, often triggered by friction or heat.

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What is Pustular Psoriasis?

Pustular psoriasis is a rare but severe type characterized by pus-filled blisters. There are two forms: localized and generalized.

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What is the most severe form of Psoriasis?

Erythrodermic psoriasis is the most severe form. It involves widespread redness, scaling, and shedding of the skin. This can lead to fluid and electrolyte imbalances.

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What influences Psoriasis?

Psoriasis is a multifactorial disease, meaning it is influenced by several factors. These include genetic predisposition, environmental factors, stress, infections, and medications.

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Chronic plaque psoriasis

A skin condition characterized by well-defined, raised, silvery-white scales on an inflamed base.

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Koebner's phenomenon

A phenomenon in which new psoriasis lesions appear at sites of injury or trauma.

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Nail psoriasis

Psoriasis affecting nail beds, causing characteristic changes like pitting (small indentations), onycholysis (nail separation) and thicker nail beds.

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Guttate psoriasis

A rare type of psoriasis with small, scattered, drop-shaped lesions that appear rapidly in response to a bacterial infection, such as strep throat.

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Palmoplantar pustular psoriasis

Psoriasis affecting the palms and soles, presenting as sterile pustules on a red base.

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Inverse psoriasis

Psoriasis characterized by smooth and shiny skin in areas of skin folds, often lacking scaling.

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Psoriatic arthritis

A type of arthritis that can occur in people with psoriasis, affecting the joints with varying severity.

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Munro microabscess

A microscopic change in the skin observed in psoriasis, characterized by a build-up of skin cells forming a 'parakeratosis' layer.

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What is Generalised Pustular Psoriasis?

Characterized by abrupt onset, fever, tender skin lesions, and studded sterile pustules on an erythematous base, demanding immediate medical attention.

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What are the complications of Generalised Pustular Psoriasis?

A dermatological emergency with potential life-threatening complications including fever, lethargy, dehydration, organ failure, sepsis, and even death.

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How is Generalised Pustular Psoriasis treated?

Treatment involves immediate hospitalization, IV fluids, systemic medications to suppress the immune response, and management of any concurrent infections.

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What is Erythrodermic Psoriasis?

A severe form of psoriasis affecting more than 80% of the body surface, characterized by widespread redness, scaling, and shedding of the skin. It often leads to fluid and protein loss, hypothermia, and other systemic complications.

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What are the complications of Erythrodermic Psoriasis?

Erythrodermic psoriasis is a dermatological emergency, posing risks of fluid and protein loss, hypothermia, infections, and even shock.

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How is Psoriasis treated?

Treatment involves topical medications to reduce scaling and inflammation, systemic medications to suppress the immune response, and phototherapy to slow the skin cell turnover rate.

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What is Roflumilast cream?

A topical phosphodiesterase 4 inhibitor, FDA approved for adult plaque psoriasis.

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What is Tapinarof cream?

An aryl hydrocarbon receptor agonist, FDA approved for adult plaque psoriasis.

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Erythrodermic Psoriasis

A type of psoriasis characterized by widespread redness, scaling, and shedding of the skin, often leading to fluid and electrolyte imbalances.

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Pustular Psoriasis

A type of psoriasis characterized by pus-filled blisters, which can be localized to certain areas or generalized to the whole body.

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Psoriatic Arthropathy

A type of psoriasis that affects the joints, leading to pain, swelling, and stiffness. It can affect any joint, but it often affects the hands, feet, and spine.

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Immunosuppressive Treatment

A type of treatment that uses drugs to suppress the immune system and reduce inflammation.

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Biological Therapies

A group of powerful drugs that specifically target certain proteins involved in the inflammatory process in psoriasis, often leading to a better response than traditional treatments.

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Monoclonal Antibody Therapy

A type of biological therapy that uses monoclonal antibodies to target specific proteins that contribute to psoriasis development.

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JAK Inhibitors

A newer generation of oral medications used for moderate to severe psoriasis that work by blocking the JAK enzyme, which plays a key role in inflammation.

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Study Notes

Psoriasis Overview

  • Psoriasis is a complex, chronic, multifactorial, inflammatory immune-mediated disease.
  • It involves hyperproliferation of keratinocytes in the epidermis, increasing the epidermal cell turnover rate.
  • Psoriasis onset is bimodal, occurring at any age from infancy to adulthood.
  • Common manifestation sites include elbows, knees, scalp, lumbosacral areas, intergluteal clefts, and glans penis.
  • Joint involvement is observed in up to 30% of patients.

Psoriasis Treatment

  • Treatment strategies are tailored based on several factors:

    • Surface area of involvement
    • Affected body sites
    • Presence/absence of arthritis
    • Plaque thickness and scaling
  • Mild to moderate localized psoriasis initially responds to topical therapy.

  • Severe or extensive disease often requires a combined approach, incorporating systemic therapy, phototherapy, and/or immunosuppressive treatments.

Types of Psoriasis

  • Plaque Psoriasis (Vulgaris): Accounts for 80-90% of cases.

    • Presents as chronic, demarcated red/pink plaques.
    • Characterized by copious silver-white scaling.
    • Often shows Koebner's phenomenon (lesions appearing at sites of trauma).
    • Affects extensor surfaces of elbows and knees, scalp, lumbosacral areas, intergluteal clefts, and glans penis.
    • Up to 45% of patients experience genital involvement.
  • Guttate Psoriasis:

    • Often follows a streptococcal throat infection.
    • Characterized by numerous small, discrete, drop-like lesions (3mm-1cm).
    • Lesions are typically round or slightly oval in shape.
  • Inverse Psoriasis:

    • Usually occurs in skin folds.
    • Lesions lack the scaling commonly observed in other psoriasis types.
    • Characterized by shiny pink-to-red, sharply demarcated plaques.
  • Plantar Psoriasis:

    • Specifically affects the soles of the feet.
  • Nail Psoriasis:

    • Nail involvement is common, with symptoms like pits, onycholysis, subungual hyperkeratosis, and salmon drop/oil drop lesions.
    • Nail involvement can be difficult to treat.
  • Erythrodermic Psoriasis:

    • Characterized by generalized erythema and scaling affecting 80-90% of the body surface area.
    • Systemic symptoms are common, including edema, tachycardia, protein/fluid loss, hypothermia, causing a dermatologic emergency.
    • Common underlying causes include severe psoriasis, atopic dermatitis, mycosis fungoides, and drug reactions.
  • Pustular Psoriasis:

    • Localized: Palms and soles are commonly affected. Presenting as sterile pustules on an erythematous base.
    • Generalized: Can be life-threatening, presenting with abrupt onset, fever, tender skin lesions. Requires immediate medical attention.
  • Psoriatic Arthropathy:

    • Involves joint inflammation in up to 30% of people with psoriasis
    • Five types exist:
      • Asymmetric (60-70%)
      • Symmetric Polyarthritis
      • DIP
      • Destructive
      • Axial Arthritis

Topical Treatment

  • Primarily for mild-to-moderate localized psoriasis.
  • Novel topical therapies include topical phosphodiesterase 4 inhibitors (Roflumilast, Tapinarof).

Systemic Treatment

  • Used for extensive or severe psoriasis.
  • Traditional: Methotrexate, ciclosporine, retinoids (acitretin)
  • Novel: Apremilat, JAK inhibitors
  • Biological Agents: targeting inflammatory cytokines (TNF-α, IL-17, IL-12, IL-23), including monoclonal antibody therapies and IL-17 / IL-23 inhibitors
  • Research focuses on developing targeted therapies, particularly directed at specific inflammatory pathways involved in psoriasis.
  • Investigating new biologics for various inflammatory targets (p40, IL-12, IL-23, TNF-alpha, IL-22 pathways) demonstrates advancement in potential future therapies for psoriasis treatment.

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