الفهرس 
Common Viral Skin DiseasesOnly 14 pages are availabe for public view
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Abstract
Viral skin diseases are major group of diseases caused by many types of viruses either DNA or RNA. In this study 4 types of viral skin diseases (varicella, herpes zoster, herpes simplex and verruca) were included. Oxidants or free radicals are atoms or molecules that contain one or more unpaired electron capable of independent existence, making these species highly reactive. A delicate balance exists between the formation of these reactive oxygen species and the endogenous protective mechanisms such as antioxidants. It has been shown that reactive oxygen species are increased and cause tissue injury in some viral infections. Retionl (Vitamin A); has been known to be essential for immune defense of the organism and protection against infections. Vitamin A and related retinoids modulate many different immune response elements including, lymphopoiesis, apoptosis, cytokine production, function of neutrophils, natural killer cells, monocytes and macrophages, T lymphocytes and B lymphocytes and production of immunoglobulin. It has been shown that vitamin A supplementation decreases the morbidity and mortality of some skin diseases.