Children who continue to suck their thumbs as they get older are often the target of teasing from their friends and siblings. In many cases, this peer pressure alone is enough to make them stop. These children may occasionally revert to sucking their thumbs in private as a means of calming themselves before sleep. In most cases, this is harmless and the habit will disappear over time. However, parents may suggest to their child the idea of wearing a glove, sock or other device that might prevent this type of thumb-sucking.

In some cases, a child will need medical help before stopping thumb-sucking. Pediatricians sometimes suggest that a parent place a plastic strip or an adjustable plastic cap called a “thumb guard” over the thumb to prevent the child from sucking on it. Over-the-counter agents are available that can be applied to the thumb. These cause a bitter taste when the thumb is sucked. However, it is important that the child feel comfortable with these methods. Any treatment that makes a child feel tense, ashamed or afraid should not be used.

Parents who fear dental damage as a result of their child’s thumb-sucking may consider consulting with a pediatric dentist. A device called a palatal bar can be temporarily installed that will prevent the thumb from putting pressure on the roof of the mouth (palate) or teeth. In many cases, children find that this device makes it uncomfortable for them to suck their thumb. Thus, the device can often make children stop sucking their thumb altogether.

Parents can also take steps to help their children stop sucking their thumbs. Parents may attempt to calmly explain why they dislike the thumb-sucking habit and explain why it is important for the child to stop.

Parents are also urged to include their child in the process of breaking the habit by asking for suggestions from the child about what might help them. Children can also be consulted about issues such as how many slip-ups they should be allowed each week, or whether a plan should be worked out where the child gradually stops sucking the thumb during certain activities (e.g., while watching television). Involving children in this way is empowering, making it more likely that attempts to quit thumb-sucking will be successful.

Parents should not punish, ridicule or scold the child, and should never pull a child’s hand from the mouth. This is likely to make the problem worse. Instead, parents should look for positive ways to replace the child’s habit. Sometimes, the simple act of keeping children occupied in enjoyable activities may relieve the boredom that causes them to suck their thumbs. If a parent suggests the change and the child resists, the parent should wait a few months to ask again.