Your Child's Habits

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Parents

Many kids have habits that can be downright annoying. Four of the most common ones that children develop and parents complain about are:

  1. nail biting
  2. thumb sucking
  3. hair twirling
  4. nose picking

Although your child's habits may bother or even worry you, relax. In most cases, a habit is just a phase in the normal developmental process and is not cause for alarm.

What's a Habit?

A habit is a pattern of behavior that's repeated, and the person usually isn't even aware of it. Although kids may be blissfully unaware of a habit, their parents aren't so lucky.

And if your little one usually has one hand stuffed in the mouth and the other entwined in the hair, don't be surprised: Habits tend to occur in clusters.

Here's the lowdown on the most common habits among kids and teens:

Nail Biting

If nails chewed to the nub are familiar to you, you're not alone. One of the most common childhood habits is nail biting or picking.

Some studies estimate that 30% to 60% of kids and teens chew on one or more fingernails. And, occasionally, a child may also bite his or her toenails.

Boys and girls appear equally prone to the habit in earlier years; however, as they get older, boys are more likely to be nail biters.

Hair Twirling

If one of your kids is a hair twirler, odds are it's your daughter. The majority of children who twist, stroke, or pull their hair are girls.

Hair twirling may appear in early childhood as a precursor to hair pulling, either with or without hair loss. But many hair twirlers and pullers stop as they get older. For those who don't, simple behavior modification can help them break the habit.

However, for those who start hair pulling as older kids or teens, the habit is harder to break and may be a sign of anxiety, depression, or obsessive-compulsive disorder (OCD).

Nose Picking

Nose picking appears to be a habit that, although it usually begins in childhood, may actually linger into adulthood. If you find that hard to believe, consider that a 1995 study of adults found that 91% picked their noses regularly — and about 8% of them reported that they eat what they pick!

Thumb Sucking

The popularity of the thumb as the preferred digit to suck might suggest that it's more flavorful than, say, the index finger. But the preference for thumbs appears to be an accidental choice, resulting from the thumb coming into contact with the mouth during random movements made by an infant.

Some kids also suck their fingers, hands, or their entire fists in addition to, or instead of, their thumbs. Most thumb suckers are younger kids. In fact, anywhere from a quarter to half of 2- to 4-year-olds suck their thumbs.

Many kids suck their thumbs to calm and comfort themselves. But frequent or intense thumb sucking beyond 4 to 5 years of age can cause problems, including dental problems (such as overbite), thumb or finger infections, and being teased.

What Causes a Habit?

Why do your son's fingers appear to be an extension of his mouth, and why is there always a propeller of hair circling above your daughter's head? Experts admit that they're not always sure what causes a habit, but that it is a learned behavior that usually provides a positive outcome for the child.

Habits may develop as entertainment for a bored child or, more commonly, as a coping mechanism to soothe an anxious one. The next time you see nail biting or hair twirling, try to recall if your child has recently had a stressful experience. If so, the behavior might be your child's attempt to relieve tension just as you would by working out at the gym.

On the other hand, some kids engage in habits when they're relaxed, such as before falling to sleep or quietly listening to music. Other habits may be leftovers from infancy. In infants, thumb sucking is a common self-comfort behavior that has pleasurable associations with feedings and the end of hunger. So it may linger into childhood because of its positive associations.

Or perhaps the explanation for your child's nail biting is in your mirror. Do you bite your nails? Studies suggest that nail biting may have a strong familial or genetic component.

Still, other kids will engage in habits to attract attention or as an attempt to manipulate their parents. If kids feel that their parents are ignoring them, they may engage in the annoying habit because they know that it will provoke a reaction from Mom or Dad.

Coping With Your Child's Habit

The good news is that most habits disappear, usually by the time a child reaches school age, because the child no longer needs it or outgrows it.

But if you think it's time to help your child break a habit, consider these steps:

  • Calmly point out what you don't like about the behavior and why. This approach can be used with kids as young as 3 or 4 to help increase awareness of the problem. Say something like, "I don't like it when you bite your nails. It doesn't look nice. Could you try to stop doing that?" Most important, the next time you see the nail biting, don't scold or lecture. Punishment, ridicule, or criticism could cause the behavior to increase.
  • Involve your child in the process of breaking the habit. If your 5-year-old comes home crying from kindergarten because the other kids made fun of his thumb sucking, understand that this is a way of asking you for help. Parents can ask their kids what they think they could do to stop the habit or if they want to stop the habit. Come up with some ways to work on breaking the unwanted habit together.
  • Suggest alternative behaviors. For example, when if your child is a nail-biter, instead of saying, "Don't bite your nails," try saying, "Let's wiggle our fingers." This will increase awareness of the habit and may serve as a reminder. To occupy your child's attention, try providing a distraction, like helping you in the kitchen or working on a craft.
  • Reward and praise self-control. For example, allow your little girl to use nail polish if she lets her nails grow. Or every time your son refrains from sucking his thumb, reinforce the positive behavior by praising him and giving him a sticker or other small prize.
  • Be consistent in rewarding good behavior. If you fail to notice good behavior, it will disappear over time. The new, positive habit must be firmly established before the old one will disappear.

For the best success, it's important that your child is also motivated to break the habit. And because habits take time to develop, they're also going to take time to be replaced by alternative behavior, so be patient.

When Is a Habit No Longer Just a Habit?

In some instances, a habit may be the result or the cause of a physical or psychological problem. For example, a nose-picker may be uncomfortable because there's actually an object stuck in the nose. And the habits themselves may cause some medical complications, such as:

  • nosebleeds in the nose picker
  • ingrown or infected nails in the nail biter
  • dental problems, such as malocclusion (the failure of the teeth in the upper and lower jaws to meet properly) or thumb or finger infections in the thumb sucker

A habit may no longer be a simple habit if it negatively affects a child's social relationships or interferes with daily functioning.

Older kids who constantly suck their thumb might be experiencing significant stress or anxiety. If kids are the subject of teasing at school or have difficulty talking because they won't take their thumbs out of their mouths, the behavior has progressed beyond a simple habit. Kids who pull their hair out may have trichotillomania, a condition that results in hair loss. And habits that are in response to obsessive thoughts may be a sign of OCD.

However, most habits don't cause any significant problems and tend to improve as kids get older. But if you're concerned about your child's habits, talk with your doctor.

Reviewed by: Steven Dowshen, MD
Date reviewed: August 2011



Related Resources

OrganizationAmerican Academy of Child & Adolescent Psychiatry (AACAP) AACAP offers up-to-date information on child and adolescent development and issues.
OrganizationAmerican Academy of Family Physicians This site, operated by the American Academy of Family Physicians (AAFP), provides information on family physicians and health care, a directory of family physicians, and resources on health conditions.


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Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.

© 1995-2012 The Nemours Foundation/KidsHealth. All rights reserved.



 

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