They are inflammatory skin reactions induced photochemically in exposed areas without an immunological basis. They manifest usually as dermatitis consistent with the symptoms of sunburn reaction.
What is a phototoxic reaction?
This is the most common reaction and usually occurs when a drug you’re taking (whether by mouth or topically applied) is activated by exposure to UV light and causes damage to the skin that can look and feel like a sunburn or a rash.
How is phototoxic dermatitis treated?
Symptomatic can be obtained with relief with emollients, topical steroids, and anti-histamines. Systemic steroids may be necessary for severe cases. Sensitivity to the sun may take several weeks to abate, especially with photoallergens from sunscreens.
How long does phototoxicity last?
It usually lasts 2-4 days after UVL exposure is stopped, but in some instances, it may persist for months.
What does phototoxic mean?
Listen to pronunciation. (FOH-toh-tok-SIH-sih-tee) A condition in which the skin or eyes become very sensitive to sunlight or other forms of light.
What does Photodermatitis look like?
Signs and Symptoms
Itchy bumps, blisters, or raised areas. Lesions that resemble eczema. Hyperpigmentation (dark patches on your skin) Outbreaks in areas of skin exposed to light.
Can photosensitivity be cured?
How is photosensitivity treated? When a skin reaction has already developed, treatments may reduce discomfort and skin inflammation. Over-the-counter pain medications can relieve pain and corticosteroid cream may be prescribed to decrease inflammation. Some chemicals can cause photosensitivity and should be avoided.
What causes phototoxic dermatitis?
Results. Photodermatoses are caused by an abnormal reaction to sunlight, usually to its ultraviolet component. They are divided into phototoxic and photoallergic reactions to known photosensitizers and idiopathic photodermatoses, in which the photosensitizer is unknown.
What does Irritant dermatitis look like?
Dermatitis often appears as a well-demarcated red patch with a glazed surface, but there may be swelling, blistering and scaling of the damaged area, indistinguishable from other types of dermatitis. It can be very itchy. Contact irritant dermatitis can appear differently according to the conditions of exposure.
How do you treat plant dermatitis?
Topical steroids, and sometimes by oral steroids may be necessary to treat the rash. If there are blisters, compress the areas for 15 minutes twice daily with a mixture of a tablespoon of white vinegar in a litre of water. Ice packs or cold showers will temporarily relieve itching.
Why am I suddenly sensitive to the sun?
A sun allergy is a condition that happens when the immune system reacts to sunlight. The immune system treats sun-altered skin as foreign cells, leading to the reactions. The reactions that can occur include a rash, blisters or hives. Only people with sensitivity to the sun will exhibit symptoms.
What does sun sensitivity look like?
Symptoms of sun sensitivity are similar to those of a sunburn, and may include: A stinging and burning sensation. Rash. Redness.
Can vitamins cause sun sensitivity?
Nutrition and Supplements
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.
Is Lemon phototoxic?
Lemon oil contains furocoumarin derivatives and is known to cause phototoxicity. In this study, lemon oil was fractionated, and its phototoxic activity was measured by means of a biological assay.
What oils are phototoxic?
Phototoxic Essential Oils
- Bergamot (Citrus bergamia)
- Lime (cold pressed) (Citrus medica)
- Bitter orange (Citrus aurantium)
- Angelica root (Angelica archangelica)
- Cumin (Cuminum cyminum)
- Grapefruit (Citrus paradisi)
- Lemon (Citrus limon)
- Rue (Ruta graveolens)
What is the difference between phototoxic and Photoallergic?
In cases of phototoxic reactions, the patient presents with skin changes resembling sunburn, sometimes accompanied by blistering, whereas in cases of photoallergic reactions the skin changes are similar to those of allergic contact dermatitis.