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You’re asking about Unilateral Laterothoracic Exanthem of Childhood (ULTEC). Let’s break it down clearly and simply:
1. Definition
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ULTEC is a mild, self-limiting skin rash seen mostly in children.
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It is also called Asymmetrical Periflexural Exanthem of Childhood (APEC).
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The rash typically starts on one side of the trunk (laterothoracic area) and may spread slightly but usually remains unilateral.
2. Cause
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Exact cause unknown, but likely viral.
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Commonly occurs in children 1–5 years old.
3. Clinical Features
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Rash: Red, slightly raised, sometimes itchy.
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Location: Usually one side of the torso, sometimes extending to the inner arms or thighs.
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Other symptoms: Mild fever, fatigue, or mild upper respiratory symptoms may appear but often absent.
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Course: Lasts 1–3 weeks, then resolves without scarring.
4. Diagnosis
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Mainly clinical, based on appearance and distribution.
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No specific lab test needed in most cases.
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Important to differentiate from:
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Chickenpox (varicella)
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Contact dermatitis
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Scarlet fever
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5. Treatment
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Supportive care: moisturizing lotions, antihistamines if itchy.
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Usually self-limiting; no antibiotics required.
6. Key Points / Takeaway
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Mild, unilateral rash in children.
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Likely viral.
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Resolves spontaneously.
If you want, I can make a super-simple “one-liner memory aid” for ULTEC, like we did with morphic resonance.
Do you want me to do that?
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