Armando Hasudungan
Biology and Medicine videos

Rash

Approach History SOCRATES Family/friends with similar rash Medication Household products Examination Investigation Differential Diagnosis Roseola infantum (exanthema subitum) Pityriasis rosea Scarlet fever Impetigo Erythema infectiosum Molluscum contagiosum Tinea infection Atopic dermatitis Pruritic Non-pruritic Pityriasis rosea Roseola infantum Atopic dermatitis Scarlet fever Erythema infectiosum Molluscum contagiosum Tinea infection Distribution Erythematous exanthems that tend to start on […]

Approach

  • History
    • SOCRATES
    • Family/friends with similar rash
    • Medication
    • Household products
  • Examination
  • Investigation

Differential Diagnosis

  • Roseola infantum (exanthema subitum)
  • Pityriasis rosea
  • Scarlet fever
  • Impetigo
  • Erythema infectiosum
  • Molluscum contagiosum
  • Tinea infection
  • Atopic dermatitis
Pruritic Non-pruritic
Pityriasis rosea Roseola infantum
Atopic dermatitis Scarlet fever
Erythema infectiosum
Molluscum contagiosum
Tinea infection

Distribution

  • Erythematous exanthems that tend to start on the face
    • Measles
    • Rubella
    • Erythema infectiosum
  • Erythematous exanthems that tend to start on the trunk
    • Roseola
    • Scarlet fever
    • Unilateral laterothoracic exanthem
  • Papulo-vesicular exanthems
    • Chickenpox (syn. varicella)
    • Gianotti-Crosti syndrome
  • Exanthems of the extremities
    • Hand, foot and mouth disease
    • Papular-purpuric gloves and socks syndrome

 


Roseola Infantum (Exanthema Subitum)

  • Herpsevirus 6 and 7

Pityriasis Rosea

  • Herpesvirus 6 and 7
 Molluscum Contagiousm
  • Poxvirus

Erythema infectiosum

  • Parovirus B19

Scarlet fever

  • Group A Strep
  • Staphlococcus pyogenes

Impetigo

  • Staphylococcus
  • Bullous
  • Non-bullous (crusted)

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