PMID: 6397734Apr 1, 1984Paper

Phytophotodermatitis

Photo-dermatology
G Kavli, G Volden

Abstract

Several plant families contain species liable to cause phytophotodermatitis. They include the Umbelliferae of which Ammi majus has been known for centuries and the Rutacea to which Citrus bergamia belongs. Phototoxic plants are also found in, e.g., the Moraceae, Leguminosae, Rosaceae and Compositae plant families. The photoreactivity of the plants depends on their furocoumarins (psoralens) content. These cause skin damage by phototoxic mechanisms, when activated by longwave ultraviolet radiation (UVA). The results are clinical changes such as erythema, bullae in the skin 24-72 h later, followed by hyperpigmentation. For the strongest phototoxic plants the content of the major phototoxic furocoumarins like bergapten or xanthotoxin have been calculated at approximately 0.5 g/100 g dried plant weight, but it varies between plant parts and also with the age of the plant. Repeated contact may occasionally lead to photocontact allergy.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

The Journal of Emergency Medicine
I C WeberD M Greeson
Dermatology Online Journal
Muhterem PolatNuran Alli
Collegium antropologicum
Maja LenkovićVesna Peharda
© 2021 Meta ULC. All rights reserved