When a Baby Turns Two Colors

Harlequin color change
Discover the benign condition where an infant's body abruptly turns red on one side and pale on the other. Learn its causes and why it's harmless.
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Decoding a Circular Skin Rash

Urticaria
A patient presents with an itchy, red, circular rash with some central clearing. What are the potential causes? Explore the differential diagnosis.
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Skin Thickening in Renal Failure

Nephrogenic systemic fibrosis
Explore a rare but serious condition causing skin thickening in patients with end-stage renal disease after exposure to gadolinium-based contrast agents.
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The Erlenmeyer Flask Deformity

Gaucher's disease
A 42-year-old man presents with chronic bone pain. Radiographs reveal an Erlenmeyer flask deformity of the femur. What is the underlying diagnosis?
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The Eye of Neurofibromatosis

Lisch nodules
A patient presents with skin lesions and limb hypertrophy, signs of a common genetic disorder. What key ocular finding can help confirm the diagnosis?
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A Parasitic Invasion of the Brain

Neurocysticercosis
A patient presents with neurological symptoms. A cranial CT scan reveals numerous small cysts. Explore the diagnosis and management of this parasitic infection.
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Fever After an Insect Bite

Trypanosomiasis
A patient presents with fever and a chancre after a tsetse fly bite. Explore the diagnosis and management of this life-threatening parasitic infection.
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The Deceptive Red Nodule

Amelanotic melanoma
A red nodule on the skin might seem harmless, but it could be a dangerous mimic. Learn why some skin cancers are so easily missed. #Dermatology
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Dry Eyes and a Dry Mouth

Sjögren's syndrome
A patient presents with persistent dry eyes (xerophthalmia) and dry mouth (xerostomia). Explore the differential diagnosis and key features of this condition.
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What Your Ears Say About Your Heart

Atherosclerosis
Discover Frank's sign, a diagonal earlobe crease that can be a subtle but significant marker for cardiovascular disease. Learn about its diagnostic value.
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