• The medical term for a sun allergy is polymorphous light eruption (PLE). Children may show symptoms, although usually adults between 20 to 35 years old suddenly experience PMLE for the first time.


    An itchy, raised, red rash appears after exposure to the sun, usually affecting the face and neck, reports the Mayo Clinic, but any exposed skin can develop a rash. Nausea and a headache may also be present.


    Photosensitivity is often mistaken for sun allergies. Antimicrobial, anti-malarial, antidepressant and non-steroidal anti-inflammatory medications can cause sun sensitivity.


    If a rash appears every time the skin is exposed, medical testing can rule out an autoimmune problem, lupus or solar urticaria, a very rare condition. A physical examination, a series of blood tests and light sensitivity tests may be ordered.


    The standard treatment for the rash is cortisone cream and antihistamines to lessen the itching, according to Using sunscreen and laundry additives that increase the sun-blocking properties of fabrics will help. In bad cases, the physician may order prescription medications.

    Affected Individuals

    Females are more prone to sun allergies, as are fair-haired people and those who live in northern climates. Half of the time, PMLE is genetic, and Native Americans often experience hereditary eruptions, reports


    DermaDoctor: Sun Allergy

    Mayo Clinic: Polymorphous Light Eruption

    American College of Osteopathic Dermatology: Polymorphous Light Eruption

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