Because childhood rashes may be difficult to differentiate by appearance alone, it is important to consider the entire clinical presentation to help make the appropriate diagnosis. Considerations include the appearance and location of the rash; the clinical course; and associated symptoms, such as pruritus or fever. A fever is likely to occur with roseola, erythema infectiosum fifth disease , and scarlet fever. Pruritus sometimes occurs with atopic dermatitis, pityriasis rosea, erythema infectiosum, molluscum contagiosum, and tinea infection. The key feature of roseola is a rash presenting after resolution of a high fever, whereas the distinguishing features in pityriasis rosea are a herald patch and a bilateral and symmetric rash in a Christmas tree pattern. The rash associated with scarlet fever usually develops on the upper trunk, then spreads throughout the body, sparing the palms and soles. Impetigo is a superficial bacterial infection that most commonly affects the face and extremities of children.
The Top 10 Common Causes of Face Rash
The Generalized Rash: Part I. Differential Diagnosis - American Family Physician
A macule is a flat blemish or discoloration that measures less than 1 cm. A papule is as elevated lesion measuring less than 1 cm. Combining the two terms, a maculopapular rash is as a smooth skin rash or redness covered by elevated bumps [ 1 , 2 , 3 ]. Due to the presence of inflammation, maculopapular rash appears as reddened or erythematous. The distribution may be concentrated on a certain area of the body or it can be generalized. It may be acute, subacute, or chronic.
If your institution subscribes to this resource, and you don't have a MyAccess Profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus. N is a year-old woman who comes to see you complaining of a rash. What is the differential diagnosis of a rash? How would you frame the differential?
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