الفهرس 
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Abstract
Obesity is increasingly recognized as a worldwide major public
health problem .Waist circumference, skin fold thickness and body
mass index (BMI) are the most useful non-invasive clinical
measures to define obesity. Obesity is defined when a body mass
index (BMI) of 30 kg/m2 or greater while overweight is considered
when (BMI) falls between 25- 29.9kg/m2.
Egypt is a country where the problem of obesity is of epidemic
level. Obesity is clearly more prevalent in women and it is more
common in the elderly, but it is also increasing in children
nowadays.
The mechanisms behind obesity are still controversial. Obesity
is often considered as a life style disease caused by overeating and/or
decreased physical activity. Obesity may result from environmental,
endocrinal or genetic factors. Environmental factors include dietary
choices, socioeconomic status, behavioral factors, inactivity and
sedentary life style, psychological factors and some drugs. Primary
endocrine disease (eg, Cushing’s syndrome) is rarely the cause of
obesity; however, hyperinsulinemia and diabetes are well-known
consequences of obesity.
Obesity is known to significantly affect both skin and systemic
physiology. With growing numbers of obese patients, it will be
increasingly important for dermatologists to be able to modify and
adapt topical and systemic dermatologic therapies for obese patients.