Dermatology

The lesions may mimic infectious, vascular, inflammatory and other ulcers; they do not respond to antibiotics and debridement often exacerbates the ulcer.

Painful red lesions on the shins. Trauma? Tumor? Inflammation? The diagnosis is in the detailed differential you'll follow in this slide show.

Test your visual diagnostic skills with this slide-show case of a young boy with an odd facial lesion of approximately one month's duration.

8-year-old Al is in for follow-up of an ear infection, but his mother is more interested in why no hair will grow on that spot on the back of his head.

The patient has similar lesions elsewhere on his body. Treatment with a topical steroid was unsuccessful. Can you ID?

Test your visual diagnostic skills, vote for your preferred Dx and treatment, and learn about 2 common annular lesions along the way.

An 11-year-old boy breaks out quite suddenly with a rash of papulosquamous lesions with a silvery scale. Can you Dx?

Case study: What would cause a shock of stark white in the center of this child's otherwise black head of hair? Your Dx?

The 89-year-old has used topical mupirocin twice daily for several weeks without improvement. Examine the images. What's your diagnosis?

A summer tan failed to conceal this embarrassing rash on an 18 y/o boy’s arms, back, and chest. Can you make a diagnosis?

The young man is missing school because he is self-conscious about the hypopigmented lesions on his arms, back, and chest. Can you make the diagnosis?

Sonidegib becomes second hedgehog inhibitor for locally advanced disease.

These slides summarize the latest sun safety dos and don’ts, providing the most sound and sensible patient education recommendations under the sun.

The patient says the incidental finding appeared in adulthood and has been stable for years. Can you identify this reticulated erythema?

What are the characteristics of this blistering rash caused by exposure to UV light?

Is this pruritic lesion just unsightly, or is it indicative of a dangerous condition? Test your acumen in this quiz.

Two lesions have been slowly expanding on an older man’s chest for 2 years. What is the problem? This and questions on 3 other topics in this quiz.

This is a very distinct, rare, and remarkable hemorrhagic rash, first recognized in 2006, with 7 known cases reported in the literature.

What’s the underlying cause of current cellulitis in this morbidly obese man?

There is a lot of new information about the link between various malignancies and inflammatory bowel disease. Here: answers to 3 key questions.

This diagnosis is a relative dermatologic emergency; presumptive treatment with antivirals should at least be considered if any suspicion exists.

What figures into your differential of a slowly enlarging asymptomatic plaque, like the one on this child's hand?

A patient with a history of moderately severe and extensive plaque psoriasis now has a rash on her hands unlike any skin problem she has previously experienced. Do you know what this is? Answer this question and 4 others in this quiz.

New guidelines recommend benzoyl peroxide for most patients with comedonal acne and all patients with inflammatory acne-especially those who receive a topical or oral antibiotic as therapy, in whom it can prevent antibiotic resistance.

Would Mohs surgery be indicated for this 68-year-old man?

Texting without gloves while sitting on a ski lift explains the onset of this rash in a patient with a long history of widespread psoriasis.

This woman was snowboarding over a very cold weekend and developed a pustular rash at night after her activities.

This lesion began to develop multiple colors. Is there cause for concern? Test your knowledge on 5 topics in this quiz.

This benign, solitary, nodular tumor on the lower eyelid arises from the follicular infundibulum. What do you know about this condition and the 4 others in this quiz?

This tongue-twister of a dermatosis is the most common type seen during pregnancy and primarily occurs in women carrying twins or triplets.