الفهرس 
Review of LiteratureOnly 14 pages are availabe for public view
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Abstract
Rosacea is a chronic skin condition that primarily affects the
central face, and is often characterized by flare-ups and remissions. It
is often mistaken for acne, eczema, or a skin allergy. It typically
begins after age of 30 as flushing or redness on the cheeks, nose, chin
or forehead.
Based on morphological characteristics, rosace is generally
classified to: erythematotelangiectatic, papulopustular, phymatous,
and ocular. Medications and topical irritants have also been known to
trigger rosacea flares. Some acne and wrinkle treatments reported to
cause rosacea include microdermabrasion and chemical peels, as well
as high dosages of isotretinoin, benzoyl peroxide, and tretinoin
Vitamin D and calcium are often used in the same sentence
because they work closely together, vitamin D’s primary role is to
control the levels of calcium found in the blood stream by constantly
allowing calcium and phosphate absorption from the intestine or
taking calcium from bones.
the unique relationship that entangles vitamin D to dermatology,
that is our skin is one source for this important vitamin and on the
other hand all available data point to its important impact on the health
of our skin and the involvement of its deficiency in the pathway of
many dermatological diseases.
The precise pathogenesis of rosacea remains unknown, but it
was recently reported that cathelicidin, an antimicrobial peptide
(AMP) related to innate immunity, was increased in rosacea
Recent studies have shown that microorganisms such
as Demodex, Staphylococcus epidermidis, and Bacillus oleronius may