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Drug-induced photosensitivity Photosensitive drug reaction secondary to medications may cause phototoxic, photoallergic, and lichenoid reactions, and photodistributed telangiectasias , as well as pseudoporphyria.
Azithromycin causes QT prolongation that may cause life-threatening arrhythmias such as torsades de pointes. [11] No harm has been found with its use during pregnancy. [10] Its safety during breastfeeding is not confirmed, but it is likely safe. [12] Azithromycin is an azalide, a type of macrolide antibiotic. [10]
Ingested medications may cause systemic photosensitivity and topically applied medications, cosmetics and essential oils may lead to local (or perhaps systemic) photosensitivity. Para-aminobenzoic acid ( PABA ), found in some sunscreens, can also cause photosensitivity.
Sunlight, especially its ultraviolet radiation component, can cause increased or additional types of damage in predisposed individuals, such as those taking certain phototoxic drugs, or those with certain conditions associated with photosensitivity, including: Psoriasis [5] Atopic eczema [5] Mastocytosis; Mast cell activation syndrome ...
Photosensitivity is the amount to which an object reacts upon receiving photons, especially visible light. In medicine, the term is principally used for abnormal reactions of the skin, and two types are distinguished, photoallergy and phototoxicity .
Phototoxicity, also called photoirritation, is a chemically induced skin irritation, requiring light, that does not involve the immune system. [1] It is a type of photosensitivity. [1] [2] The skin response resembles an exaggerated sunburn.
It increases the risk of sunburn under exposure to light from the sun or other sources. This may be of particular importance for those intending to take on vacations long-term doxycycline as a malaria prophylaxis. They may cause stomach or bowel upsets, and, on rare occasions, allergic reactions.
Stevens–Johnson syndrome (SJS) is a type of severe skin reaction. [1] Together with toxic epidermal necrolysis (TEN) and Stevens–Johnson/toxic epidermal necrolysis (SJS/TEN) overlap, they are considered febrile mucocutaneous drug reactions and probably part of the same spectrum of disease, with SJS being less severe.