The eyebrow is a bony ridge above the eye that protects the eye and bears a tuft of facial hair in most mammals. The function of the eyebrow hair is to prevent debris such as dandruff and other small objects from falling into the eyes, as well as providing sense of something near the eye, such as an insect and prevent water or sweat from dripping into the eye. Eyebrow - Human eyebrows. Most people have two eyebrows, but some people only have one. Some people, in so ...

Including:

• Eyebrow - Human eyebrows

Read more here: » Eyebrow: Encyclopedia - Eyebrow

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Trichotillomania, Trichotillomania - Treatment for Trichotillomania, Trichotillomania - Habit Reversal Training, Trichotillomania - Medications, Trichotillomania - Exposure and Response Techniques ERT, Trichotillomania - Stimulus and Control Techniques, Trichotillomania - Books

Read more here: » Trichotillomania: Encyclopedia II - Trichotillomania - Treatment for Trichotillomania

Most people have two eyebrows, but some people only have one. Some people, in some cultures, especially women, go through the time consuming process of plucking their eyebrow hair with tweezers to shape them; others remove excess eyebrow hair through hot wax or other techniques such as eyebrow threading, some simply rip the hair out with their fingers. One form of body piercing that is becoming increasingly popular pierces the eyebrow skin; ...

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Eyebrow, Eyebrow - Human eyebrows

Read more here: » Eyebrow: Encyclopedia II - Eyebrow - Human eyebrows

Hair is a filamentous outgrowth of the skin found only in mammals. In some species it is absent at certain stages of life. It projects from the epidermis, though it grows from follicles deep in the dermis. So-called "hairs" (trichomes) are also found on plants. The projections on insects and spiders are actually bristles. The hair of non-human species is commonly referred to as fur. There are varieties of cats, dogs, and mice bred to have little or no visible hair. Hair serves a number of different functions. It provides insula ...

Including:

• Hair - Human hair
• Hair - Structure
• Hair - Types of hair
• Hair - Hair change with aging
• Hair - Androgenic hair
• Hair - Other information

Read more here: » Hair: Encyclopedia - Hair

Obsessive-compulsive disorder (OCD) is a psychiatric disorder, specifically, an anxiety disorder. OCD is manifested in a variety of forms, but is most commonly characterized by a subject's obsessive drive to perform a particular task or set of tasks, compulsions commonly termed rituals. OCD should also be distinguished from the similarly named but notably different obsessive-compulsive personality disorder, which psychiatric guidelines def ...

Including:

• Obsessive-compulsive disorder - Symptoms and prevalence
• Obsessive-compulsive disorder - Causes and related disorders
• Obsessive-compulsive disorder - Treatment
• Obsessive-compulsive disorder - Neuropsychiatry
• Obsessive-compulsive disorder - OCD in literature and film
• Obsessive-compulsive disorder - Famous/celebrity OCD sufferers

Read more here: » Obsessive-compulsive disorder: Encyclopedia - Obsessive-compulsive disorder

The English suffix -mania denotes an obsession or madness towards something; a mania. The suffix is used in some medical terms denoting mental disorders. It has also entered standard English and is affixed to many different words to denote enthusiasm or obsession with that subject. Madness or obsessions with different subjects include: arithmomania, counting bibliomania, collecting books decalcomania, transferring pictures, an artistic technique dipsomania, alcohol drapetomania, ...

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Alopecia areata ("baldness in spots") is a form of hair loss from areas of the body, usually from the scalp. Because it causes bald spots on the head especially in the first stages, it is also called spot baldness. Hair loss can extend to eyebrows, eyelashes and facial and nasal hair and create more bald spots elsewhere in the body. Alopecia areata monolocularis describes baldness in only one spot, alopecia areata multilocularis refers to multiple areas of hair loss. If the patient loses all the hair ...

Including:

• Alopecia areata - Diagnosis
• Alopecia areata - Treatment
• Alopecia areata - Prognosis

Read more here: » Alopecia areata: Encyclopedia - Alopecia areata

On most adult humans there are two main types of hair: terminal hair, and vellus hair. A third type, lanugo hair, is present in the fetus, and some newborn babies. It can also be seen on the bodies of those who are extremely emaciated. Terminal hair grows thick and long, and is what grows on the head, armpits and pubic area, as well as on the face, chest, arms and legs (better evident in men). Vellus hair is a very soft and short hair that grows most places in the body in both sexes. In Caucasians it is often colourless, or blonde. It is best seen in women and children, as they ...

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Hair, Hair - Human hair, Hair - Structure, Hair - Types of hair, Hair - Hair change with aging, Hair - Androgenic hair, Hair - Other information

Read more here: » Hair: Encyclopedia II - Hair - Types of hair

On most adult humans there are two main types of hair: terminal hair, and vellus hair. A third type, lanugo hair, is present in the fetus, and some newborn babies. It can also be seen on the bodies of those who are extremely thin. Terminal hair grows thick and long, and is what grows on the head, armpits and pubic area, as well as on the face, chest, arms and legs (better evident in men). Vellus hair is a very soft and short hair that grows most places in the body in both sexes. In Caucasians it is often colourless, or blonde. It is best seen in women and children, as they ...

See also:

Hair, Hair - Human hair, Hair - Structure, Hair - Types of hair, Hair - Hair change with aging, Hair - Androgenic hair, Hair - Other information

Read more here: » Hair: Encyclopedia II - Hair - Types of hair

Older people tend to develop gray hair (actually colorless) because the pigmentation in the hair is lost and the hair becomes colorless. The age at which this occurs varies from person to person, but in general nearly everyone 75 years or older has gray hair, and in general men tend to become gray at younger ages than women. The older a person is, the more likely he or she is to have gray hair, and above 85 almost nobody has his or her original hair color. Gray hair is considered to be a characteristic of normal aging. People starting out with very pale blond hair usually deve ...

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Hair, Hair - Human hair, Hair - Structure, Hair - Types of hair, Hair - Hair change with aging, Hair - Androgenic hair, Hair - Other information

Read more here: » Hair: Encyclopedia II - Hair - Hair change with aging

The hair follicles on much of the body respond to androgens (primarily testosterone and its derivatives). The rate of hair growth increases and the weight of the hairs increases. However, different areas respond with different sensitivities. As testosterone level increases (normally at puberty), the sequence of appearance of sexual (androgenic) hair reflects the gradations of androgen sensitivity. The pubic area is most sensitive, and heavier hair usually grows there first in response to androgens. The following regions also respond to andro ...

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Hair, Hair - Human hair, Hair - Structure, Hair - Types of hair, Hair - Hair change with aging, Hair - Androgenic hair, Hair - Other information

Read more here: » Hair: Encyclopedia II - Hair - Androgenic hair

Notable variations in physical appearance of the top and back of the head are: headgear hair color (original or artificial) hair type haircut, curls, dreadlocks, braids, ponytails, wigs, decorative hairpins, the way the hair is combed or otherwise arranged, or disarranged. Hair spray, gel, etc. may be used for fixation of the arrangement and may also make it shiny. It is commonly claimed that hair and nails will continue growing for several days after death. This is a myth; the appearance of growth is actually caused by the retraction of skin as the surrounding tissue dehydra ...

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Hair, Hair - Human hair, Hair - Structure, Hair - Types of hair, Hair - Hair change with aging, Hair - Androgenic hair, Hair - Other information

Read more here: » Hair: Encyclopedia II - Hair - Other information

Modern research has revealed that OCD is much more common than previously thought. An estimated two to three percent of the population of the United States is thought to have OCD or display OCD-like symptoms. Because of the condition's personal nature, and the lingering stigma that surrounds it, there may be many unaccounted-for OCD sufferers, and the above percentages could be even higher. The typical OCD sufferer performs tasks (or compulsions) to seek relief from obsessions. To others, these tasks may appear simple and unnecessary. ...

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Obsessive-compulsive disorder, Obsessive-compulsive disorder - Symptoms and prevalence, Obsessive-compulsive disorder - Causes and related disorders, Obsessive-compulsive disorder - Treatment, Obsessive-compulsive disorder - Neuropsychiatry, Obsessive-compulsive disorder - OCD in literature and film, Obsessive-compulsive disorder - Famous/celebrity OCD sufferers

Read more here: » Obsessive-compulsive disorder: Encyclopedia II - Obsessive-compulsive disorder - Symptoms and prevalence

Modern research has revealed that OCD is much more common than previously thought. An estimated two to three percent of the population of the United States is thought to have OCD or display OCD-like symptoms. Because of the condition's personal nature, and the lingering stigma that surrounds it, there may be many unaccounted-for OCD sufferers, and the actual percentages could be even higher. The typical OCD sufferer performs tasks (or compulsions) to seek relief from obsessions. To others, these tasks may appear simple and unnecessary ...

See also:

Obsessive-compulsive disorder, Obsessive-compulsive disorder - Symptoms and prevalence, Obsessive-compulsive disorder - Causes and related disorders, Obsessive-compulsive disorder - Treatment, Obsessive-compulsive disorder - Neuropsychiatry, Obsessive-compulsive disorder - OCD in literature and film, Obsessive-compulsive disorder - Famous/celebrity OCD sufferers, Obsessive-compulsive disorder - Refrences.

Read more here: » Obsessive-compulsive disorder: Encyclopedia II - Obsessive-compulsive disorder - Symptoms and prevalence

There are many different theories about the cause of Obsessive Compulsive Disorder. Some research has discovered a type of size abnormality in different brain structures. The majority of researchers believe that there is some type of abnormality in the neurotransmitter serotonin, among other possible psychological or biological abnormalities; however, it is possible that this activity is the brain's response to OCD, and not its cause. Recent research has revealed a possible genetic mutation that could be the cause of OCD. Resea ...

See also:

Obsessive-compulsive disorder, Obsessive-compulsive disorder - Symptoms and prevalence, Obsessive-compulsive disorder - Causes and related disorders, Obsessive-compulsive disorder - Treatment, Obsessive-compulsive disorder - Neuropsychiatry, Obsessive-compulsive disorder - OCD in literature and film, Obsessive-compulsive disorder - Famous/celebrity OCD sufferers

Read more here: » Obsessive-compulsive disorder: Encyclopedia II - Obsessive-compulsive disorder - Causes and related disorders

There are many different theories about the cause of obsessive compulsive disorder. Some research has discovered a type of size abnormality in different brain structures. The majority of researchers believe that there is some type of abnormality in the neurotransmitter serotonin, among other possible psychological or biological abnormalities; however, it is possible that this activity is the brain's response to OCD, and not its cause. Recent research has revealed a possible genetic mutation that could be the cause of OCD. Resea ...

See also:

Obsessive-compulsive disorder, Obsessive-compulsive disorder - Symptoms and prevalence, Obsessive-compulsive disorder - Causes and related disorders, Obsessive-compulsive disorder - Treatment, Obsessive-compulsive disorder - Neuropsychiatry, Obsessive-compulsive disorder - OCD in literature and film, Obsessive-compulsive disorder - Famous/celebrity OCD sufferers, Obsessive-compulsive disorder - Refrences.

Read more here: » Obsessive-compulsive disorder: Encyclopedia II - Obsessive-compulsive disorder - Causes and related disorders

OCD primarily involves the brain regions of the striatum and the cingulate cortex, especially the striatum. OCD involves several different receptors, mostly H2, M4, nk1, NMDA, and non-NMDA glutamate receptors. The receptors 5-HT1D, 5-HT2C, and the mu opioid receptor exert a secondary effect. The H2, M4, nk1, and non-NMDA glutamate receptors are active in the striatum, whereas the NMDA receptors are active in the cingulate cortex. The activity of certain receptors is positively correlated to the severity of OCD, whereas the activity of certain other receptors is negatively corr ...

See also:

Obsessive-compulsive disorder, Obsessive-compulsive disorder - Symptoms and prevalence, Obsessive-compulsive disorder - Causes and related disorders, Obsessive-compulsive disorder - Treatment, Obsessive-compulsive disorder - Neuropsychiatry, Obsessive-compulsive disorder - OCD in literature and film, Obsessive-compulsive disorder - Famous/celebrity OCD sufferers

Read more here: » Obsessive-compulsive disorder: Encyclopedia II - Obsessive-compulsive disorder - Neuropsychiatry

First symptoms are small, soft, bald patches which can take just about any shape but are most usually round. Initial presentation most commonly occurs in the late teenage years but can happen with people of all ages. It most often affects the scalp but may occur on any hair-bearing part of the body. There may be different skin areas with hair loss and regrowth in the same body at the same time. It may go into remission for a time or permanently. The longer the hair loss persists, the smaller the chance that it will grow back. Fingernails may be affected, especially in severe cases where various nail changes may appear, the most common ...

See also:

Alopecia areata, Alopecia areata - Diagnosis, Alopecia areata - Treatment, Alopecia areata - Prognosis

Read more here: » Alopecia areata: Encyclopedia II - Alopecia areata - Diagnosis

Typically, humans have the longest hair on the top of the head, with shorter hair on the eyelids and eyebrows. The axillary (armpit) hair and pubic hair serves as lubrication during rubbing. Sometimes, the term body hair is used, to distinguish it from hair on the head. Individual hairs alternate periods of growth and dormancy. During the growth portion of the cycle, hair follicles are long and bulbous, and the hair advances outward at about a third of a millimeter per day. After three to six months, body hair growth stops (the ...

See also:

Hair, Hair - Human hair, Hair - Structure, Hair - Types of hair, Hair - Hair change with aging, Hair - Androgenic hair, Hair - Other information

Read more here: » Hair: Encyclopedia II - Hair - Human hair

OCD primarily involves the brain regions of the striatum and the cingulate cortex, especially the striatum. OCD involves several different receptors, mostly H2, M4, nk1, NMDA, and non-NMDA glutamate receptors. The receptors 5-HT1D, 5-HT2C, and the mu opioid receptor exert a secondary effect. The H2, M4, nk1, and non-NMDA glutamate receptors are active in the striatum, whereas the NMDA receptors are active in the cingulate cortex. The activity of certain receptors is positively correlated to the severity of OCD, whereas the activity of certain other receptors is negatively corr ...

See also:

Obsessive-compulsive disorder, Obsessive-compulsive disorder - Symptoms and prevalence, Obsessive-compulsive disorder - Causes and related disorders, Obsessive-compulsive disorder - Treatment, Obsessive-compulsive disorder - Neuropsychiatry, Obsessive-compulsive disorder - OCD in literature and film, Obsessive-compulsive disorder - Famous/celebrity OCD sufferers, Obsessive-compulsive disorder - Refrences.

Read more here: » Obsessive-compulsive disorder: Encyclopedia II - Obsessive-compulsive disorder - Neuropsychiatry