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How Does Psoriasis Work?

Skin is an organ on its own and is part of a large organ system called the integumentary system, which also includes oil glands, sweat glands, hair and nails.

There are two main layers of skin: the epidermis and the dermis.

  • The dermis is the bottom layer and the epidermis is the outer layer of skin.
  • The deepest layer produces millions of new cells every day. The cells are pushed up toward the surface of the skin.
  • Typical skin cells regenerate every 28 days; for psoriasis patients, skin cells are regenerated in 3-7 days.
  • This leads to cells piling up before the body can have time to shed them, forming red, sore, scaly plaques on the affected areas.