ingrown hair

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1. any thin, threadlike structure.
2. especially, the specialized epidermal structure produced only by mammals, developing from a papilla sunk in the corium. The life cycle of a hair (hair cycle) consists of three phases, called anagen, catagen, and telogen. Called also pilus.
Structure of hair and hair follicles. From Applegate, 2000.
3. the aggregate of such structures.
beaded hair hair marked with alternate swellings and constrictions; seen in monilethrix.
burrowing hair one that grows horizontally in the skin, causing a papule that may become infected; see also pili cuniculati, under pilus.
club hair a hair whose root is surrounded by a bulbous enlargement composed of keratinized cells, preliminary to normal loss of the hair from the follicle.
Frey's h's stiff hairs mounted in a handle; used for testing the sensitiveness of pressure points of the skin.
ingrown hair one that has curved and reentered the skin, causing a papule that may become infected. See also pili incarnati, under pilus.
lanugo hair the fine hair on the body of the fetus.
moniliform hair beaded hair.
pubic hair the hair on the external genitalia; called also pubes.
sensory h's hairlike projections on the surface of sensory epithelial cells.
tactile h's hairs sensitive to touch.
taste h's short hairlike processes projecting freely into the lumen of the pit of a taste bud from the peripheral ends of the taste cells.
terminal hair the coarse hair on various areas of the body during adult years.
twisted hair a hair that is twisted through an axis of 180 degrees at spaced intervals, being abnormally flattened at the site of twisting. See also pili torti, under pilus.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

in·grown hair

(in'grōn hār)
Hair that grows at more acute angles than is normal, and in all directions; it incompletely clears the follicle, turns back in, and causes pseudofolliculitis.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
If possible, you should leave ingrown hairs for a while as they may disappear without you having to do anything.
`Dante tried on his own to get rid of (the ingrown hair) and then created the infection,' UO coach Mike Bellotti said.
I've listed a few easy tips that will allow you to shave your legs without suffering from razor bumps, cuts and ingrown hair. Do these, and you'll be well on your way to showing some legs.
Art of Shaving Ingrown Hair Night Treatment, pounds 31.10
Plucking can also irritate the pores and allow for ingrown hair and unsightly bumps.
A pilonidal sinus is a small channel that some people develop over the tail bone, caused by an ingrown hair. It is commonly found in men who do a lot of driving or sitting down.
Breast cancer is very rare in someone your age and this lump could be a cyst caused by an ingrown hair or an enlarged lymph node due to an infection.
A major skin problem affecting Black men who shave is that of ingrown hair, which results when curly or kinky hair grows back into the skin.
Phillips began touting the merits of his newly created ingrown hair and razor bump-relief treatment more than 43 years ago, he encountered significant challenges in gaining the attention of buyers in all retail distribution channels.
-- Philips Norelco has launched its first power shaver for reducing ingrown hair.
Lady Bump Stopper Razor Rash Relief and Ingrown Hair Treatment for Women with Hair Inhibitor comes in a two-ounce tube, while Lady Bump Stopper Skin Replenishing Moisturizing Lotion with Hair Inhibitor comes in a five-ounce tube.
Any minor infection that's in the skin, such as the inflammation that you get in the follicle of an ingrown hair, can lead to the odd swollen gland around the area.