
Nail biting is a common habit among children and can be caused by a variety of factors, such as boredom, anxiety, or stress relief. While it is usually harmless, excessive nail-biting can lead to health issues, including infections, tooth damage, and skin problems. As a parent, it is important to address your child's nail-biting habit without causing shame or stress, which may worsen the behavior. This can be done by keeping your child's nails trimmed short, encouraging them to wash their hands frequently, and redirecting their attention to other activities or objects, such as chewing gum or playing with a stress ball. In some cases, offering small prizes or creating a sticker chart for each day they refrain from nail-biting can be motivating. It is also crucial to understand the underlying reasons for your child's nail-biting and address any underlying stress or anxiety.
How to help your child stop biting their nails
| Characteristics | Values |
|---|---|
| Identify the cause | Boredom, anxiety, habit, imitation, or stress relief |
| Keep nails trimmed | Prevent nail biting by keeping nails short |
| Hygiene | Remind your child to wash their hands often |
| Distract with activities | Engage your child in activities like colouring, drawing, puzzles, etc. |
| Reward system | Offer stickers, small prizes, or manicures as incentives |
| Physical reminders | Use secret codes, touches, or whistles to remind your child not to bite |
| Alternative behaviours | Suggest chewing gum, carrot sticks, or playing with a stress ball |
| Address mental health | Consult a doctor or counsellor if nail biting is severe and causing self-harm |
| Avoid punishment | Do not scold, nag, or punish your child for nail biting |
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What You'll Learn

Nail biting can cause infections and dental issues
Nail biting can cause a variety of dental issues. Firstly, the friction of the teeth grinding against the nails can wear away the protective enamel, causing the teeth to crack or chip. This can lead to dental displacement, dental crowding, and orthodontics issues. Additionally, small pieces of nail can get lodged in the gums, causing inflammation and periodontal diseases such as gingivitis and periodontitis. Nail biting can also increase the likelihood of developing a chronic teeth-grinding habit, which can lead to further oral health problems, headaches, and jaw soreness.
Nail biting is also a risk factor for various infections. The mouth carries a lot of germs, and the dirt and bacteria that accumulate under the nails can be transferred to the mouth during nail biting, leading to gum disease and other oral infections. In addition, nail biting can introduce bacteria into the body that can cause stomach or intestinal infections. Furthermore, nails can be a vehicle for pinworms, which are tiny parasites that can infect the intestinal tract and lay eggs in the anal region while the child sleeps. These eggs can be spread through shared bedding or toys, or by playing in dirt containing the eggs.
In addition to these health concerns, nail biting can also cause permanent nail damage, altering the anatomy of the nail and making it wider and shorter, with small wounds forming around it that can deform the nail. This can be aesthetically unpleasant and lead to self-esteem issues. Therefore, it is important to address nail biting habits, especially if they are causing health problems or negatively impacting a child's well-being.
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It can be a sign of anxiety or depression
Nail biting is a common habit among children, and while it is usually harmless, it can sometimes be a sign of underlying anxiety or depression. Research has shown that more than two-thirds of children who are referred to a mental health clinic for nail-biting exhibit at least one other major co-morbid psychiatric disorder. The most common co-occurring disorders are attention deficit hyperactivity disorder (ADHD), oppositional defiant disorder (ODD), separation anxiety disorder, enuresis, tic disorder, and obsessive-compulsive disorder (OCD).
If your child's nail-biting is accompanied by other signs of anxiety or depression, it may be a cause for concern. Other symptoms of anxiety in children can include chewing on fingers, picking at clothing, inconsistent sleep patterns, stomach aches, headaches, fear, worry, distress, or isolation. Depression is closely linked with anxiety, and children experiencing depression may also exhibit changes in their mood, concentration, decision-making abilities, and social interactions.
If you suspect that your child's nail-biting is related to underlying anxiety or depression, it is important to address the root cause rather than solely focusing on stopping the behaviour. Talk to your child to identify stressors in their life and work together to develop coping strategies. Encouraging good sleeping habits can also help to improve concentration, boost the immune system, and promote relaxation.
It is important to remember that punishing or shaming your child for nail-biting is not helpful and can even make the behaviour worse. Instead, try to reduce any stress your child may be experiencing and provide them with alternative ways to keep their hands busy, such as playing with a worry stone or squeezing a stress ball.
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Help your child become aware of the habit
It is important to remember that your child might not even be aware that they are biting their nails. Therefore, the first step is to help them become more conscious of the habit. You can do this by encouraging your child to understand when and where they bite their nails. You could suggest that they keep a journal or diary to record when they bite their nails, what they are doing, and how they are feeling. This will help them to identify any patterns or triggers and increase their awareness of the habit.
Another strategy is to agree on a quiet, secret reminder for when they forget that they are trying to stop biting their nails. This could be a light touch on the arm or a code word or sign. Some children benefit from physical reminders that bring their attention to the habit as they are doing it. For example, wearing adhesive bandages on their fingertips or gloves, or painting their nails with a couple of layers of nail polish or bitter-tasting solution to make biting more difficult. However, some children may find these strategies punitive, so it is important to ensure that your child is on board and has chosen to try these methods.
It is also important to talk to your child about nervous habits and how they can be broken. You could suggest reading a book together about breaking bad habits, such as "What to Do When Bad Habits Take Hold: A Kid's Guide to Overcoming Nail Biting and More" by Dawn Huebner. This will help your child to understand that they are not alone in their habit and that it is possible to break it.
Finally, it is crucial to keep your child's nails neatly trimmed. This will remove the temptation to bite and also prevent bacteria and dirt from building up under the nails, reducing the risk of infection.
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Offer distractions like clay or puzzles
Nail biting is a common habit among children, and it is often harmless. However, in some cases, it can lead to physical and emotional issues. If your child is biting their nails, it is important to address the issue in a supportive and non-punitive way. Here are some ways to offer distractions, such as clay or puzzles, to help your child stop biting their nails:
Identify triggers:
First, try to identify what triggers your child's nail-biting habit. Observe when and where they bite their nails. Is it during stressful moments, while watching TV, or when they are bored? Understanding these triggers can help you address the underlying causes. For example, if your child bites their nails when they are anxious, you can help them find other ways to manage their anxiety, such as through breathing exercises or talking about their feelings.
Provide sensory alternatives:
Offer clay or puzzles as a distraction for your child's hands and mouth. These activities can satisfy their sensory needs and provide an outlet for their energy. Other options include fidget toys, stress balls, or textured objects that they can manipulate with their hands.
Encourage positive nail care:
Teach your child the importance of regular nail grooming. Keeping their nails trimmed and clean can make nail-biting less appealing. You can also try coating their nails with a bad-tasting substance, such as a bitter-flavoured nail polish, jalapeño juice, or a DIY solution of salt and water. However, be cautious when using spicy or acidic substances, as they may cause irritation or allergic reactions if they come into contact with the eyes or skin.
Set clear expectations and offer rewards:
Explain to your child that nail-biting is not a healthy habit and set clear expectations for stopping. Offer praise and rewards for their progress. For example, you can let them choose a small toy or activity as a reward for not biting their nails for a certain period.
Model appropriate behaviours:
Demonstrate healthy habits and coping mechanisms to help your child understand alternative behaviours. Show them how to manage stress or boredom without resorting to nail-biting. For example, you can encourage them to take up drawing or reading as calming activities when they feel the urge to bite their nails.
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Keep nails trimmed and hands clean
Keeping your child's nails trimmed and hands clean is an important step in helping them stop biting their nails. Long nails provide something to bite on, so trimming them regularly can help prevent nail-biting. It is also a good idea to remind your child to wash their hands often, as this will reduce the amount of dirt and germs they come into contact with. This is especially important if they are nail-biters, as biting nails can introduce germs into the body and cause infections.
Encouraging good nail hygiene can also help your child become more aware of their nail-biting habit. You can suggest that they keep their nails clean and tidy by washing and scrubbing them regularly. This can be made into a fun activity by doing it together and choosing colourful soaps or nail brushes together. You could also suggest that they file their nails instead of biting or tearing them. Filing nails can also be made into a fun activity by offering your child colourful, kid-friendly nail files.
If your child is old enough, you could also suggest that they wear gloves or apply a bitter-tasting nail polish to their nails. This will act as a reminder not to bite their nails. However, it is important to note that any direct intervention, such as painting nasty-tasting solutions on their nails, may feel like punishment to your child, whether or not that is your intention. Therefore, it is important to involve your child in the decision-making process and only proceed with their consent.
In addition to keeping nails trimmed and hands clean, it is also beneficial to address the underlying causes of nail-biting. Nail-biting is often a self-soothing behaviour that children engage in when they are feeling anxious, bored, or restless. Helping your child find alternative ways to manage their emotions, such as through physical activity or playing with a worry stone or stress ball, can help reduce their nail-biting habit.
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Frequently asked questions
Nail biting can cause infections, such as paronychia, a bacterial skin infection. It can also cause dental issues, including gum and tooth root damage. In rare cases, it can be a sign of excessive anxiety or other mental health issues.
Help your child become aware of the habit and work with them to break it. Keep their nails trimmed and offer them alternatives to biting, such as chewing gum or playing with a stress ball. Positive reinforcement, such as a reward system, can also help.
Nail biting is often a nervous habit, a way for children to relieve stress or boredom. It can also be a cosmetic preference for shorter nails or a result of seeing others do it. In some cases, it can be a sign of underlying anxiety or other mental health concerns.
If your child's fingertips are sore, bloody, or infected, or if they are also exhibiting other worrying behaviours, such as skin picking or hair pulling, consult a doctor. If the habit is causing them distress or impacting their daily life, professional counselling may be beneficial.









































