A Surprising Gum Diagnosis

Metastasis of colorectal cancer
A 60-year-old woman with a history of cancer develops a large gum mass. Discover the diagnostic process when oral swelling signals a more serious condition.
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A Deadly Swim: Post-Pool Confusion & Fever

Naegleria fowleri
A 44-year-old man develops confusion and high fever after swimming. Explore the diagnosis behind this rapidly progressive and often fatal meningoencephalitis.
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A Rash After a Sore Throat

Poststreptococcal pustulosis
A 47-year-old man develops a pustular rash on his hands and feet after being treated for pharyngitis. Explore the differential diagnosis and key features.
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A Dark Spot in the Duodenum

Pseudomelanosis duodeni
An 83-year-old man presents with food impaction. Endoscopy reveals a rare, benign condition in the duodenum. Learn about this incidental finding.
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A Worsening Rash in an Infant

Zinc deficiency
A 4-month-old, exclusively breast-fed boy presents with a 6-week history of a worsening rash and extensive erosive plaques. Explore this challenging diagnosis.
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When a Rash is More Than Skin Deep

Tinea
Explore a case of a common cutaneous eruption. Learn how mycologic culture of skin scrapings helps diagnose and guide treatment for this dermatological condition.
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A Puzzling ICU Complication

Propofol
A 62-year-old man with COPD is intubated in the ICU. Five days later, his urine turns green. What common medication is responsible for this side effect?
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A Puzzling Pruritic Pregnancy Rash

Pemphigoid gestationis
A 30-year-old woman at 34 weeks gestation presents with an intensely itchy rash that began on her abdomen and progressed to blisters. What's the diagnosis?
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A Dangerous Red Eye in an RA Patient

Necrotizing anterior scleritis
Explore the case of a 73-year-old woman with rheumatoid arthritis who presents with severe eye pain, inflammation, and scleral thinning. What's the diagnosis?
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An Unusual Conjunctival Growth

Conjunctival squamous-cell carcinoma
An 89-year-old woman presents with chronic red eye and a foreign body sensation. A slit-lamp exam reveals a raised lesion on the conjunctiva. What's the diagnosis?
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