Photosensitivity reactions are those important clinical and produced abnormal, triggered or aggravated by exposure to light, usually sunlight. Unlike fototoxia, skin overreacts and does not play only an increase of tonality, but appear eczema lesions, blistering, etc …
Fototóxia
It is the increased absorption of sunlight by making contact or drugs or chemicals, or sometimes by alterations in the metabolism of persons or in certain diseases. The injuries that occur are the same as sun exposure produces only more intense and appear less exposure time.
1. Fototoxia induced by drugs.
It is a cutaneous adverse reaction due to systemic or topical exposure of a drug and light. The chemicals may be responsible, in addition to drugs, cosmetics and industrial products. The reaction can occur in any individual, is required and dose-dependent, and essentially it is an exaggerated sunburn. It is more common than photoallergic reactions and may also occur at any age and any skin type. Eczematous reaction is not seen in phototoxic reactions. Reactions by the Sun (more…)
