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Guttate Psoriasis

Acute eruptive form of psoriasis characterized by sudden onset of small (2-10 mm) drop-shaped erythematous scaly papules predominantly on trunk and proximal extremities, frequently triggered by streptococcal pharyngitis in children and young adults.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Dermatoloji department. Book Appointment →

What is Guttate Psoriasis?

Guttate psoriasis is an acute, eruptive form of psoriasis characterized by sudden onset of multiple small (2-10 mm) round-to-oval erythematous papules with fine scale predominantly affecting trunk, proximal limbs, and scalp.

Pathophysiology involves T-cell activation by streptococcal superantigens cross-reacting with skin keratin in genetically susceptible individuals (HLA-Cw6 association). Approximately 60-80% of cases follow streptococcal pharyngitis or perianal streptococcal infection.

Disease course varies: one-third experience complete spontaneous resolution within months, one-third develop chronic plaque psoriasis, and one-third have recurrent episodes triggered by infections. Children and young adults under age 30 are most commonly affected.

Symptoms

Sudden onset of multiple small (2-10 mm) red papules
Drop-shaped or teardrop morphology with fine silvery scale
Distribution on trunk, proximal arms, legs, scalp
Mild pruritus or asymptomatic in some patients
Recent history of sore throat 1-3 weeks prior
Less commonly affects face, palms, soles, mucosa
Postinflammatory pigment changes after resolution

Risk Factors

Recent streptococcal pharyngitis (most common trigger)
Perianal streptococcal infection in children
Family history of psoriasis (HLA-Cw6 positive)
Age under 30 years (most common in children/young adults)
Viral upper respiratory infections (rare trigger)
Stress as a precipitating factor
Certain medications: lithium, beta-blockers, antimalarials
Withdrawal of systemic corticosteroids

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Sudden widespread red scaly papules after sore throat
  • Persistent rash for >3 weeks not improving
  • Diagnostic uncertainty (differential includes pityriasis rosea, secondary syphilis, viral exanthem)
  • Severe widespread involvement >10% body surface area
  • Significant pruritus disrupting sleep
  • Family history of psoriasis with new skin findings
  • Failed first-line topical therapy after 4-6 weeks

Treatment Methods

01
Streptococcal evaluation: throat culture, ASO titer, anti-DNase B; treat infection with penicillin V 500 mg QID 10 days
02
Tonsillectomy considered for recurrent guttate psoriasis with documented streptococcal trigger
03
Topical therapy: medium-potency corticosteroids (triamcinolone 0.1%, mometasone) BID for 2-4 weeks
04
Topical vitamin D analogs: calcipotriol-betamethasone combination once daily
05
Phototherapy: narrowband UVB three times weekly (most effective for widespread guttate)
06
PUVA for adults with refractory disease
07
Systemic therapy rare in guttate; reserved for severe widespread or progression to plaque psoriasis
08
Methotrexate, acitretin, cyclosporine, biologics (adalimumab, ustekinumab, ixekizumab) for chronic cases
09
Emollients: thick fragrance-free moisturizers twice daily
10
Patient education on potential evolution to plaque psoriasis and infection avoidance

Which Department to Visit?

You can visit our Dermatoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.