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    • Deprecated function: Return type of DatabaseStatementBase::execute($args = [], $options = []) should either be compatible with PDOStatement::execute(?array $params = null): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2246 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
    • Deprecated function: Return type of DatabaseStatementEmpty::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
    • Deprecated function: Return type of DatabaseStatementEmpty::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
    • Deprecated function: Return type of DatabaseStatementEmpty::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
    • Deprecated function: Return type of DatabaseStatementEmpty::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
    • Deprecated function: Return type of DatabaseStatementEmpty::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).

    Dirk M. Elston, MD

    Article

    The addition of sclerotherapy to pulsed dye laser therapy showed a decrease in telangiectases and smaller patches after 2 years.

    Cutaneous Collagenous Vasculopathy With Ocular Involvement

    Author:
    Ansley C. Devore, MD
    Hesham Alshaikh, MD
    Dirk M. Elston, MD

    Cutaneous collagenous vasculopathy (CCV) is an uncommon microangiopathy that presents with progressive telangiectases on the lower extremities...

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    Article

    A well-circumscribed wheal with erythematous serpiginous borders and central punctum, secondary to a bite by a Triatoma bug.

    What’s Eating You? Triatoma and Arilus cristatus Bugs

    Author:
    Nicole D. Boswell, MD
    Dirk M. Elston, MD

    Bites of triatomine bugs can cause anaphylaxis; prevention of bites to diminish household infestation is important because sensitization can...

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    Article

    Capsicum peppers, which may cause irritant contact dermatitis.

    Botanical Briefs: Handling the Heat From Capsicum Peppers

    Author:
    Catherine Barker, BS
    Dirk M. Elston, MD

    Capsaicin is a neuropeptide-active compound found in Capsicum peppers with many promising applications; however, dermatologists should be...

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    Article

    Daffodil

    Botanical Briefs: Daffodils (Narcissus Species)

    Author:
    Kevin P. Lee, MD
    Dirk M. Elston, MD

    Narcissus species are thought to be the most common cause of irritant contact dermatitis among florists.

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    Article

    Erythematous vesicular rash with secondary crusting in a patient with Toxicodendron dermatitis.

    Botanical Briefs: Toxicodendron Dermatitis

    Author:
    Madeline Joyce Hunt, MD
    Dirk M. Elston, MD

    Toxicodendron dermatitis is a pruritic vesicular eruption in areas of contact with the plant.

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    Article

    Dermatitis of the hand characterized by erythema and hyperkeratosis caused by tulipalin A in Peruvian lily (Alstroemeria) and resembling so-called tulip fingers caused by Tulipa species and cultivars

    Botanical Briefs: Tulipalin A

    Author:
    Kevin P. Lee, MD
    Dirk M. Elston, MD

    Contact dermatitis is a common issue for many floral employees. Tulips are one of the most common causes of hand dermatitis.

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    Article

    Fan-shaped leaves of the ginkgo tree

    Botanical Briefs: Ginkgo (Ginkgo biloba)

    Author:
    Catherine S. Barker, BS
    Dirk M. Elston, MD

    Ginkgo extract is widely considered safe for use; however, dermatologists should be aware that it can cause systemic dermatitis and serious...

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    Article

    Hypersensitivity reaction to mosquito bites characterized by bullous lesions at the bite sites

    What’s Eating You? Mosquitoes (Culicidae)

    Author:
    Laura Andrews, BS
    Carter R. Ellis, MD
    Dirk M. Elston, MD

    We describe the pathophysiology and clinical appearance of mosquito bite reactions as well as proper management of this condition.

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    Article

    Serpiginous tentaclelike lesions following a jellyfish sting

    Aquatic Antagonists: Jellyfish Stings

    Author:
    Jason S. Park, PharmD
    Dirk M. Elston, MD

    Jellies, more commonly known as jellyfish, are a common cause of stings in oceans throughout the world.

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    Article

    What’s Eating You? Caterpillars

    Author:
    Carter Reid Ellis, MD
    Dirk M. Elston, MD
    Eric W. Hossler, MD
    Shawn E. Cowper, MD
    Ronald P. Rapini, MD

    This article focuses on the diagnosis and management of dermatoses related to caterpillars.

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    Article

    Purpura Fulminans in an Asplenic Intravenous Drug User

    Author:
    Emily S. Nyers, MD
    Rachael H. Kappius, MD
    Laura S. Winterfield, MD
    Dirk M. Elston, MD

    In patients with severe purpura fulminans and a gangrenous limb, it is important to allow adequate time for demarcation of gangrene and not rush...

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    Article

    Flowered bloodroot (Sanguinaria canadensis)

    Botanical Briefs: Bloodroot (Sanguinaria canadensis)

    Author:
    Lauren Schwartzberg, DO
    Sandra S. Osswald, MD
    Dirk M. Elston, MD

    In dermatology, bloodroot has been utilized for its cytotoxic effects; it has been marketed as black salve as an anticancer treatment, but it does...

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    Article

    Aquatic Antagonists: Sea Cucumbers (Holothuroidea)

    Author:
    Carter R. Ellis, MD
    Dirk M. Elston, MD
    Juan Pedro Lonza Joustra, MD
    Vidal Haddad Jr, MD

    Sea cucumbers are sausage-shaped aquatic creatures living on the ocean floors across the world. They are considered a food delicacy in many...

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    Article

    Phacomatosis Pigmentokeratotica Associated With Raynaud Phenomenon, Segmental Nevi, Hyperhidrosis, and Scoliosis

    Author:
    Faliang Ren, MD
    Laura Pruitt, MD
    Qi Tan, MD
    Dirk M. Elston, MD

    Phacomatosis pigmentokeratotica (PPK) is characterized by the coexistence of speckled lentiginous nevus and nevus sebaceous.

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    Article

    Thick Hyperkeratotic Plaques on the Palms and Soles

    Thick Hyperkeratotic Plaques on the Palms and Soles

    Author:
    Nicole L. Bolick, MD, MPH
    Lisa E. Trivedi, MD
    Dirk M. Elston, MD

    A 52-year-old woman with a history of rheumatoid arthritis presented with a rash on the palms and soles of 7 years' duration that started around...

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    • MDedge Home
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