Skin Diseases

What's the best way to dislodge a fishhook? What if there is bony involvement?

This non-tender, freely mobile, rubbery-feeling nodule is a classic lipoma. Diagnostic contenders include epidermal cyst and cutaneous metastases.

Creatures of all kinds can get under your patients’ skin and cause problems, and the results sometimes are mistaken for other types of lesions. This week’s photo essay will test your ability to identify various kinds of diagnoses.

Ulcerating ankle; loud snoring; a new onset rash: see if you can answer this week’s 5 quiz questions.

This translucent dark pink nodule located just behind the nail is the classic presentation of a digital myxoid cyst.

A rapidly developing lesion . . . flashing lights . . . blue sclera: can you answer this week’s 5 quiz questions?

Read carefully this week: you'll find helpful clues in at least 3 of the descriptions . . .

Here: short cases with photos that show melanoma, and pigmented lesions that mimic melanoma.

Go for the Glory Quiz - Does this rash suggest something more than skin deep? Diabetes and CKD? Scrotal lesions? See if you can answer all 5 quiz questions.

This pigmented macule clearly stands out against a bland background of fair-complected skin. This is known as the “ugly duckling” sign. Such lesions should always be viewed with suspicion and a biopsy is generally indicated.

Is thyroid hormone medication associated with nail plate deformity, or is something else going on?

Cutaneous larva migrans (CLM), also known as “creeping eruption,” is the most commonly acquired tropical dermatosis

Recent trauma caused this lesion, which had been present since the patient’s birth, to enlarge. What is it?

Images of guttate hypomelanosis, jellyfish sting, basal cell carcinoma, cercarial dermatitis (swimmer’s itch), epidermal growth factor receptor inhibitor photosensitivity (sunburn), seabather’s eruption, and squamous cell carcinoma.

This week’s questions challenge your dermatologic and radiologic skills, and then some. See how you fare…

The diagnosis of juvenile dermatomyositis can be challenging when proximal muscle weakness develops without characteristic skin manifestations. In this patient, rash appeared 2 months after the onset of muscle weakness. As a result, the initial diagnosis was viral myositis, which led to delayed therapy.

Images of acute allergic contact dermatitis, Lyme disease, southern tick–associated rash illness, tick-borne babesiosis, Rocky Mountain spotted fever, and brown recluse spider bites.

There are 3.5 million cases of skin cancer each year, which is more than new cases of breast, prostate, lung, and colon cancers combined.

Which organism is the likely cause of this lesion? Can you pick up dx clues in this sonogram? Test your clinical skills here with this week’s 5-question quiz...

Is this lesion the result of an injury, as the boy’s mother suspected, or something else?

Images of guttate, small-plaque, and chronic plaque psoriasis; systemic lupus erythematosus; pityriasis rubra pilaris; and secondary syphilis.

Does piercing have anything to do with these skin lesions? How best to determine the cause of a gradually enlarging neck mass? See how you do with this week's 5 quiz questions . . .

Some skin neoplasms are quite subtle and do not present as obvious exophytic lesions. This basal cell carcinoma presented as a subtle area of asymptomatic discoloration under the patient’s eye.

What disorder do these asymptomatic skin lesions and chest film findings point to in a homosexual man? Test your clinical skills in this week’s 5-question quiz.

A 53-year-old man became concerned when ever-increasing numbers of painful oral lesions developed on the buccal mucosa and tongue. A bland diet did not help. What does this look like to you? Test your clinical acumen with this week's quiz questions.

CRPS is essentially a clinical diagnosis. Allodynia and hyperalgesia are notable criteria for the diagnosis for type 1 and type 2.

Images: Allergic contact dermatitis, seborrheic keratosis, dermatophytosis, oro-labial herpes simplex, hereditary trichoepithelioma

Xanthomata, foreign body aspiration, statin interactions, fingernail clubbing, benign papillary fibroelastoma. Test your skills with this week's 5-question quiz.

Prominent, pigmented polyangular scales on the extensor surfaces of the arms, legs, and trunk suggested recessive X-linked ichthyosis. DNA analysis demonstrated an abnormal steroid sulfatase gene, which confirmed the diagnosis.

Test your clinical skills in this week’s 5-question quiz.