• The skin is the largest and most visible organ of the body. It reflects the health of the body and acts as a barrier against injury and bacteria.
• Skin disorders are the fourth most frequent cause of all human disease, affecting between 30–70% of people worldwide. Most people develop some type of skin disease during their life, from infants to the elderly, and this is one of the leading reasons to seek medical advice in all societies.
   Common skin diseases include:
• Skin cancer -Warts
  Skin infections: fungal, viral (eg, herpes simplex), and bacterial
  Dermatitis — one in six children develop atopic dermatitis (eczema)
  Psoriasis
  Acne — a common condition affecting adolescents worldwide
  Hand dermatitis — resulting from external contact with detergents and household chemicals, affects most homemakers with young families