The differential diagnostic possibilities for this tender nodule included hypertrophic actinic keratosis, keratoacanthoma, squamous cell carcinoma, and verruca. The possibility of squamous cell carcinoma dictated removal with histologic examination.
This translucent dark pink nodule located just behind the nail is the classic presentation of a digital myxoid cyst.
This biker asked that his wound be rinsed with hydrogen peroxide, which is now felt to be irritating to tissue and no longer recommended for use in rinsing out a traumatic wound. Water or saline is preferable. Also, superficial abrasions heal better when kept moist.
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.
The patient received standard acyclovir dosage for first outbreak genital herpes: 200 mg orally, 5 times daily, for 10 days total. At this point, there is no way to predict how often or how severe future recurrences will be.
The patient was a traveling salesman and was concerned that the lesions were bedbug bites. The diagnosis of herpes simplex virus infection was confirmed by viral “culture.” What was this patient's condition?
The 2% preparation of an allylamine antifungal is a new addition to the menu of available topical agents. It has the advantage of once-daily dosing and shorter course of therapy.
Up to 80% of those with necrobiosis lipoidica have diabetes mellitus; however, this disorder develops in fewer than 1% of people who have diabetes.
The location (pretibial surface) of this ulcer, its visibly rolled undermined border, and severe pain are all typical of pyoderma gangrenosum, which is typically associated with inflammatory bowel disease, rheumatoid arthritis, and hematologic malignancies.
This woman is allergic to an ingredient in her favorite lipstick.