What is photosensitive dermatitis?

What are the symptoms of photosensitivity?

Symptoms of photosensitivity may include a pink or red skin rash with blotchy blisters, scaly patches, or raised spots on areas directly exposed to the sun. Itching and burning may occur and the rash may last for several days. In some people, the reaction to sunlight gradually becomes less with subsequent exposures.

What does a photosensitivity rash look like?

Polymorphous light eruption, also known as polymorphic light eruption, is a rash caused by sun exposure in people who have developed sensitivity to sunlight. The rash usually appears as red, tiny bumps or slightly raised patches of skin.

What causes photosensitivity dermatitis?

Photosensitivity dermatitis is the name given to an eczematous eruption arising in response to exposure to electromagnetic radiation. It is most commonly provoked by exposure to sunlight. The reaction may relate to UVB, UVA and/or visible light. It arises in all skin types.

What causes photosensitivity?

Examples of photoaggravated diseases include lupus erythematosus, erythema multiforme, atopic eczema, psoriasis, viral exanthemata, pemphigus, dermatitis herpetiformis and rosacea. Drugs and chemicals may interact with UV to induce photosensitivity.

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What does Photodermatitis look like?

Signs of photodermatitis include: Itchy bumps, blisters, or raised areas. Lesions that resemble eczema. Hyperpigmentation (dark patches on your skin)

Does photosensitivity go away?

The eruption usually goes away within several days to weeks. Typically, people with this condition who continue to go out in the sun gradually become less sensitive to the effects of sunlight (a process known as hardening).

How long does a photosensitive rash last?

An itchy or burning rash appears within hours, or up to 2 to 3 days after exposure to sunlight. It lasts for up to 2 weeks, healing without scarring. The rash usually appears on the parts of the skin exposed to sunlight, typically the head, neck, chest and arms.

How do you stop photosensitivity?

The best way to prevent symptoms of photosensitivity is to limit the amount of time you spend in the sun. People who are photosensitive should always use sunscreen when outside. Covering and protecting your skin may also help prevent a reaction.

What do lesions look like?

Skin lesions are areas of skin that look different from the surrounding area. They are often bumps or patches, and many issues can cause them. The American Society for Dermatologic Surgery describe a skin lesion as an abnormal lump, bump, ulcer, sore, or colored area of the skin.

How do you treat photosensitive dermatitis?

The main form of treatment for photosensitive dermatitis will typically include prevention methods, such as using sun protection, avoiding contact with any known allergens, and stopping any photosensitizing drugs if possible.

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Why am I suddenly sensitive to the sun?

The most common form of sun allergy is polymorphic light eruption, also known as sun poisoning. Some people have a hereditary type of sun allergy. Others develop signs and symptoms only when triggered by another factor — such as a medication or skin exposure to plants such as wild parsnip or limes.

How do I know if my rash is fungal or bacterial?

Skin infections caused by viruses usually result in red welts or blisters that can be itchy and/or painful. Meanwhile, fungal infections usually present with a red, scaly and itchy rash with occasional pustules.

What drugs can cause photosensitivity?

Drugs that have been implicated in causing photosensitive eruptions are reviewed. Tetracycline, doxycycline, nalidixic acid, voriconazole, amiodarone, hydrochlorothiazide, naproxen, piroxicam, chlorpromazine and thioridazine are among the most commonly implicated medications.

What deficiency causes sun sensitivity?

If you do not get enough of some nutrients, your skin can become sensitive to sunlight. Pellagra, for example, is caused by a niacin deficiency and leads to photosensitivity. Other nutrients, particularly antioxidants and flavonoids, may help protect skin against sun damage in healthy people.