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    The 7 Types of Psoriasis

    Knowing which kind of psoriasis you have helps you and your doctor make a treatment plan. Most people only have one type at a time. Sometimes, after your symptoms go away, a new form of psoriasis will crop up in response to a trigger.

    Here's how you can spot the 7 types of psoriasis.

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    Plaque Psoriasis

    This is the most common type. About 8 in 10 people with psoriasis have this kind. You may hear your doctor call it "psoriasis vulgaris."

    Plaque psoriasis causes raised, inflamed, red skin covered with silvery, white scales. These patches may itch and burn. It can appear anywhere on your body, but often pops up in these areas:

    • Elbows
    • Knees
    • Scalp
    • Lower back

    Guttate Psoriasis

    This type often starts in children or young adults. It happens in less than 2% of cases.

    Guttate psoriasis causes small, pink-red spots on your skin. They often appear on your:

    • Trunk
    • Upper arms
    • Thighs
    • Scalp

    Triggers include:

    • Upper respiratory infection such as strep throat or tonsillitis
    • Stress
    • Skin injury
    • Certain drugs such as beta-blockers

    This type of psoriasis may go away within a few weeks, even without treatment. Some cases, though, are more stubborn and require treatment.

    Inverse Psoriasis

    This type shows up as areas that are bright red, smooth, and shiny, but don't have scales. It's usually found in these locations:

    • Armpits
    • Groin
    • Under the breasts
    • Skin folds around the genitals and buttocks

    Inverse psoriasis may worsen with sweating and rubbing. A buildup of yeast may trigger it.

    Pustular Psoriasis

    This kind of psoriasis is uncommon and mostly appears in adults. It causes pus-filled bumps (pustules) surrounded by red skin. These may look infectious, but are not.

    This type may show up on one area of your body, such as the hands and feet. Sometimes it covers most of your body, which is called "generalized" pustular psoriasis. When this happens it can be very serious, so get immediate medical attention.

    Generalized pustular psoriasis can cause:

    Triggers include:

    • Topical medicine (ointments you put on your skin) or systemic medicine (drugs that treat your whole body), especially steroids
    • Suddenly stopping systemic drugs or strong topical steroids that you used over a large area of your body
    • Getting too much ultraviolet (UV) light without using sunscreen
    • Pregnancy
    • Infection
    • Stress
    • Exposure to certain chemicals
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