Streptococcal Infection as a Psoriasis Trigger
Placeholder: throat strep can kick off an immune cascade toward skin.
- Strep pharyngitis: Common preceding infection (Placeholder note)
- 1–3 weeks: Typical latency (Placeholder note)
- Children/young adults: Age skew (Placeholder note)
- Molecular mimicry: Mechanism class (Placeholder note)
Immune cross-reactivity basics
Placeholder: streptococcal M-protein resembles skin keratin epitopes.
Placeholder callout: strep throat history matters in new guttate cases.
Guttate Teardrop Lesion Eruption
Placeholder: small drop-shaped lesions appear suddenly and widely.
- 2–10 mm: Lesion size (Placeholder note)
- Trunk, limbs: Distribution (Placeholder note)
- Days: Onset speed (Placeholder note)
- Teardrop papules: Shape (Placeholder note)
Acute eruption pattern
Placeholder: lesions scatter widely, unlike localized plaques.
Placeholder callout: sudden widespread onset is a hallmark clue.
Chronic Plaque Psoriasis Baseline Pattern
Placeholder: thick scaly plaques settle into fixed body sites.
- >1 cm plaques: Lesion size (Placeholder note)
- Elbows, knees, scalp: Distribution (Placeholder note)
- Weeks to months: Onset speed (Placeholder note)
- Thick demarcated patches: Shape (Placeholder note)
Chronic baseline features
Placeholder: plaques persist with thick silvery scale over time.
Placeholder callout: chronic plaque type dominates adult psoriasis.
Course Comparison — Resolving vs Chronic
Placeholder: guttate often self-resolves; plaque type usually persists.
- Weeks–months: Guttate resolution (Placeholder note)
- Years: Plaque persistence (Placeholder note)
- Guttate→plaque possible: Conversion risk (Placeholder note)
- Varies by type: Relapse pattern (Placeholder note)
Divergent trajectories
Placeholder: course pattern guides monitoring and expectations.
Placeholder callout: some guttate cases evolve into chronic plaque disease.
Type-Specific Treatment Approach
Placeholder: therapy choice tracks lesion type and disease course.
- Topicals, phototherapy: Guttate first-line (Placeholder note)
- Topicals, biologics: Plaque first-line (Placeholder note)
- Antibiotics if active: Strep management (Placeholder note)
- Extent-dependent: Systemic threshold (Placeholder note)
Matching therapy to pattern
Placeholder: treatment intensity scales with chronicity and body surface area.
Placeholder callout: type-specific plans improve outcomes.