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Skin Problems & Treatments Health Center

Medical Reference Related to Skin Problems & Treatments

  1. Portuguese Man of War Sting

    The sting of the Portuguese man-of-war. One of the most painful effects on skin is the consequence of attack by oceanic hydrozoans known as Portuguese men-of-war, which are amazing for their size, brilliant color, and power to induce whealing. They have a small float that buoys them up and from which hang long tentacles. The wrap of these tentacles results in linear stripes, which look like whiplashes, caused not by the force of their swing but from deposition of urticariogenic and irritant substances.

  2. Pigmented Nevi

    Pigmented nevi (moles) are growths on the skin that usually are flesh-colored, brown or black. Moles can appear anywhere on the skin, alone or in groups.

  3. Rash from Poisonous Plants

    Poison ivy, poison oak and poison sumac are plants that contain an irritating, oily sap called urushiol. Urushiol triggers an allergic reaction when it comes into contact with skin, resulting in an itchy rash, which can appear within hours of exposure or up to several days later.

  4. Poison Ivy

    Poison ivy with characteristic shiny, red, 3-leaf configuration.

  5. Pityriasis Versicolor

    Pityriasis versicolor. Scaly, hypopigmented macules of pityriasis versicolor on the chest of a child.

  6. Rocky Mountain Spotted Fever

    Rocky Mountain spotted fever. This disease is caused by Rickettsia rickettsii and is transmitted by a number of different ticks. Despite its geographical title, Rocky Mountain spotted fever is present in many locations throughout the United States and the entire Western Hemisphere. After infection by tick bite, there is an incubation period of 2–14 days. The abrupt onset of the disease includes severe headache, fever, chills, arthralgia, and myalgia. After 2–3 days of these constitutional symptoms, erythematous macules erupt on the wrists, hands, forearms,legs, and ankles, as seen in these figures. Lesions then spread to the palms and soles and the trunk. The macules originally blanch with pressure but soon become purpuric and even necrotic. The disease causes a severe vasculitis and complications include disseminated intravascular coagulation, hemorrhage into the gastrointestinal and urinary tracts, and cardiovascular collapse.

  7. Port-wine Stain on Infant

    This image of a port wine stain shows a unilateral vascular malformation made up of capillary ectasias that may be present throughout the dermis and that gradually increase with age.

  8. Rothmund-Thomson Syndrome

    Rothmund-Thomson syndrome. Erythema and poikloderma on the cheek of a child.

  9. Port-Wine Stain

    Extensive port-wine stain on the right neck of a young female.

  10. Port-Wine Stain

    Port-wine stain. This unilateral vascular malformation has a markedly different histology, significance, and natural history from that of the salmon patch. The port-wine stain is made up of capillary ectasias that may be present throughout the dermis and that gradually increase with age. The color changes from pink to purple as the patient grows, and the lesions may become nodular during adult life. Because port-wine stains show no tendency to involute, they may represent a significant, lifelong cosmetic problem.

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