Acne
Acne vulgarisis a condition involving blemishes
(or lesions) of the skin that affects most
people at some stage of their life.
Tiny openings on the skin (pores) typically hold
a single, tiny hair (follicle). A group of cells
called sebaceous glands is located at the bottom
of each follicle. These glands make an oily
substance called sebum.
The body uses the sebum to lubricate the hair
and skin. Movement of sebum from the sebaceous
glands to the skin surface helps to clean out
the follicle, carrying away dead skin cells,
hair cells, and bacteria.
When the follicle becomes clogged and the sebum
is trapped inside, the familiar Acne blemishes
can develop. These blemishes can appear as dark-colored
follicle plugs, small white pimples, or red,
swollen, and painful bumps under the skin.
Acne:
typically affects adolescents from about 11
years of age through the mid-teens. However,
Acne can affect both younger children and people
in the 20- to 40-year age group. It usually goes
away without any permanent damage, although
scarring is possible in some cases.
Recognizing the symptoms
Acne
can involve the face, scalp, neck, chest, back,
shoulders, and upper arms and legs. The
lesions
can be any of several types and more than one
type of
lesion
may be present at the same time.
Blackhead
(open comedone):
A follicle plug made up of dried sebum, dead
skin and hair cells, and a skin chemical called
melanin that gives the blackhead its dark color.
Whitehead
(closed comedone):
A follicle follicle appearing as a white or
skin-colored bump under the skin.
Papule,
pustule,
or
nodule:
A more serious lesion appearing red and swollen
due to inflammation or infection of the tissue
around the clogged follicle which is often
painful and feels hard. This can lead to
scarring in most people.