i-Human Week 4: 2-Year-Old Female With Rash
Original Pediatric Case Mastery 2026
100 original case-based prompts • History • Physical exam • Differential diagnosis • Diagnostics • Management
• Documentation • Clinical judgment
Scope note: The referenced Stuvia listing is a paid resource described as an i-Human Week 4 case involving a 2-year-old
female with rash and actual screenshots. This guide does not reproduce screenshots, locked i-Human content, proprietary
answer paths, or the purchased document. Public listings were used only to identify the broad case theme. The material below
is independently authored.
Clinical note: This is an educational study resource, not patient-specific medical advice. Pediatric rash evaluation should be
based on the child's actual appearance, vital signs, history, examination, and current clinical guidance.
i-Human Week 4 Pediatric Rash — Original Case Mastery 2026 Page 1
, How to Work the Case
1. Stabilize first. Before chasing the diagnosis, decide whether the child has airway compromise, respiratory distress, shock,
altered mental status, severe dehydration, rapidly progressive purpura, blistering/peeling, or significant mucosal disease.
2. Characterize the rash. Document morphology, blanching, distribution, symmetry, surface, mucosal involvement, and
whether lesions migrate or remain fixed.
3. Build a time-linked HPI. Establish what happened before the rash: fever, respiratory symptoms, food, medication, product
exposure, daycare illness, travel, or contact with a sick person.
4. Rank—not just list—the differential. A strong differential explains why the leading diagnosis fits and what findings would
make a dangerous alternative more likely.
5. Order targeted tests. Testing should answer a specific question and change management, isolation, treatment, or
follow-up.
6. End with safety-netting. Caregivers need concrete return precautions for breathing difficulty, dehydration, altered behavior,
rapidly progressive rash, purpura, blistering/peeling, or persistent/worsening illness.
High-Yield Rash Pattern Table
Pattern Features Common considerations
Urticarial Raised wheals, intense itch, transient/migratory Acute urticaria, allergic trigger
Maculopapular Flat + raised lesions, generally fixed for days Viral exanthem, drug eruption
Vesicular Small fluid-filled lesions Viral infection, other causes
Scaly annular Ring-like plaque with scale Tinea corporis
Honey-crusted Superficial erosions/crust Impetigo
Nonblanching Petechiae/purpura Bleeding, vasculitis, invasive infection
Blistering/peeling Bullae, skin pain, epidermal detachment Severe infection/drug reaction
i-Human Week 4 Pediatric Rash — Original Case Mastery 2026 Page 2
Original Pediatric Case Mastery 2026
100 original case-based prompts • History • Physical exam • Differential diagnosis • Diagnostics • Management
• Documentation • Clinical judgment
Scope note: The referenced Stuvia listing is a paid resource described as an i-Human Week 4 case involving a 2-year-old
female with rash and actual screenshots. This guide does not reproduce screenshots, locked i-Human content, proprietary
answer paths, or the purchased document. Public listings were used only to identify the broad case theme. The material below
is independently authored.
Clinical note: This is an educational study resource, not patient-specific medical advice. Pediatric rash evaluation should be
based on the child's actual appearance, vital signs, history, examination, and current clinical guidance.
i-Human Week 4 Pediatric Rash — Original Case Mastery 2026 Page 1
, How to Work the Case
1. Stabilize first. Before chasing the diagnosis, decide whether the child has airway compromise, respiratory distress, shock,
altered mental status, severe dehydration, rapidly progressive purpura, blistering/peeling, or significant mucosal disease.
2. Characterize the rash. Document morphology, blanching, distribution, symmetry, surface, mucosal involvement, and
whether lesions migrate or remain fixed.
3. Build a time-linked HPI. Establish what happened before the rash: fever, respiratory symptoms, food, medication, product
exposure, daycare illness, travel, or contact with a sick person.
4. Rank—not just list—the differential. A strong differential explains why the leading diagnosis fits and what findings would
make a dangerous alternative more likely.
5. Order targeted tests. Testing should answer a specific question and change management, isolation, treatment, or
follow-up.
6. End with safety-netting. Caregivers need concrete return precautions for breathing difficulty, dehydration, altered behavior,
rapidly progressive rash, purpura, blistering/peeling, or persistent/worsening illness.
High-Yield Rash Pattern Table
Pattern Features Common considerations
Urticarial Raised wheals, intense itch, transient/migratory Acute urticaria, allergic trigger
Maculopapular Flat + raised lesions, generally fixed for days Viral exanthem, drug eruption
Vesicular Small fluid-filled lesions Viral infection, other causes
Scaly annular Ring-like plaque with scale Tinea corporis
Honey-crusted Superficial erosions/crust Impetigo
Nonblanching Petechiae/purpura Bleeding, vasculitis, invasive infection
Blistering/peeling Bullae, skin pain, epidermal detachment Severe infection/drug reaction
i-Human Week 4 Pediatric Rash — Original Case Mastery 2026 Page 2
