
There are several disorders related to nail-biting and picking, which can be associated with pain and discomfort. Onychophagia, for instance, is a common disorder, affecting 20-30% of people, and involves biting or chewing on fingernails or toenails. A less common disorder is onychotillomania, which involves compulsively picking at or trying to tear off nails, and can lead to nail bed destruction and paronychia, a painful infection. Paronychia can also be caused by over-aggressive manicuring, including cutting or tearing the cuticle.
| Characteristics | Values |
|---|---|
| Disorder name | Paronychia, Onychotillomania, Onychophagia |
| Symptoms | Throbbing pain, swelling, redness, damaged skin around the nail, pus, fever |
| Causes | Bacterial or fungal infection, nail biting, skin picking, tearing cuticles, diabetes, constant exposure to water, chemicals |
| Treatment | Soaking in warm water, oral or topical antibiotics, draining pus, antifungal medication |
| Prevention | Avoid nail biting, keep blood sugar levels in check, keep the nail area dry |
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What You'll Learn
- Paronychia: an infection with bacteria that invade the skin, causing throbbing pain, swelling and redness
- Onychophagia: a common disorder, also known as nail biting, affecting 20-30% of people
- Onychotillomania: a less common disorder where nails are picked at constantly, leading to nail bed destruction
- Treatment for paronychia: medication and keeping the nail area dry are key to recovery
- Triggers for paronychia: over-aggressive manicuring, biting nails, diabetes, and constant exposure to water or chemicals

Paronychia: an infection with bacteria that invade the skin, causing throbbing pain, swelling and redness
Paronychia is a bacterial skin infection that causes throbbing pain, swelling, and redness around the nails. It can be acute or chronic. Acute paronychia appears suddenly, often after an injury to the area, such as aggressive manicuring, biting the nails or skin around them, or picking at the skin. It causes a very painful area of swelling, warmth, and redness around a fingernail or toenail. If left untreated, acute paronychia can lead to a bone infection of the finger or toe. However, with proper treatment, it usually heals within 5 to 10 days without causing any permanent damage to the nail.
Chronic paronychia, on the other hand, develops slowly and is caused by inflammation. It causes gradual swelling, tenderness, and redness of the skin around the nails and often affects several fingers on the same hand. People with diabetes or those who constantly expose their hands to water, chemicals, or other substances are more prone to this condition. Chronic paronychia may require several weeks of antifungal medication, and even with proper treatment, it may recur if the skin is injured again or if the nail area is not kept dry.
The treatment for paronychia depends on its severity and type. For mild acute paronychia, you can treat yourself by soaking the affected finger or toe in warm water for at least 15 minutes, two to four times a day. If your symptoms do not improve or if pus develops, you should consult a doctor. Moderate to severe cases of acute paronychia may be treated with oral or topical antibiotics, and sometimes, a small part of the nail may need to be removed to ensure complete drainage.
Paronychia can also be caused by other conditions such as onychotillomania, a rare disorder characterized by compulsive nail-picking or nail-tearing behavior. It is often associated with other body-focused repetitive behaviors and psychiatric conditions. Onychophagia, or nail biting, can also lead to paronychia. These behaviors can cause damage to the nail bed and surrounding skin, increasing the risk of bacterial or fungal infections, such as paronychia.
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Onychophagia: a common disorder, also known as nail biting, affecting 20-30% of people
Onychophagia, commonly known as nail biting, is a disorder that affects 20-30% of people, including children and adults. It is characterised by a compulsive urge to bite one's fingernails, which can lead to visible damage to the nails, cuticles, and surrounding skin. This behaviour is considered a pathological oral habit and falls under the category of "body-focused repetitive behaviour disorder" in the DSM-5.
While nail biting itself is relatively common, the line between "normal" and pathological nail biting is not always clear. Those who feel intense shame, guilt, or anxiety about their nail-biting behaviour, feel unable to stop, and find that it interferes with their daily lives may be suffering from onychophagia. The disorder can cause physical side effects such as damaged nails and skin, skin and
Onychophagia can also have psychological symptoms, including distressing feelings of unease or tension before biting, embarrassment, anxiety, or guilt related to the appearance of physical damage caused by biting, and fear of others seeing their nails. Social relationships may also be affected, either due to intentional social withdrawal or shaming by others for the behaviour.
The cause of onychophagia is not fully understood, but there may be a genetic link. It is often associated with anxiety, as the act of chewing on nails reportedly relieves stress, tension, or boredom. It can also be a transferred habit from earlier thumb or finger sucking. While onychophagia can occur without symptoms of another psychiatric condition, it has been linked to other mental health issues such as attention-deficit/hyperactivity disorder (ADHD), oppositional defiant disorder, and tic disorder.
Treatment for onychophagia focuses on both the physical and psychological factors involved. Cognitive psychophysiological therapy has been shown to reduce symptoms, and special nail polish is also used as a treatment method. In some cases, medication such as N-acetylcysteine has been successful in treating onychophagia.
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Onychotillomania: a less common disorder where nails are picked at constantly, leading to nail bed destruction
Onychotillomania, or nail-picking disorder, is a rare behavioural disorder that involves the compulsive or irresistible urge to constantly pick at, pull off, bite, or otherwise injure one's nails, leading to noticeable or even irreversible self-destruction of the nail bed. It is a type of body-focused repetitive behaviour disorder (BFRBD) that falls under the category of obsessive-compulsive and related disorders in the International Classification of Diseases-10 (ICD-10).
People with onychotillomania may use their fingers or tools to manipulate their nails, causing damage that can be irreversible. The disorder is often challenging to diagnose and treat due to its variable clinical presentations, which can mimic inflammatory skin diseases, and the fact that patients often deny their nail-picking behaviour. Onychotillomania is also associated with a high rate of comorbidity with underlying neuropsychiatric illnesses or other behavioural disorders, such as depression.
The first case of onychotillomania was described in 1934, and since then, it has been recognised as a rare but significant disorder. It is often underreported and underdiagnosed, as many patients may not seek help or recognise the disorder in themselves. Onychotillomania can lead to physical disability and may indicate underlying mental health issues that require comprehensive assessment and treatment.
Diagnosis of onychotillomania typically involves a thorough examination, including a mental state evaluation, to differentiate it from other similar disorders such as onychophagia (nail-biting). Treatment options for onychotillomania are limited and not well-studied, but psychiatric evaluation and management of any underlying mental health conditions are crucial aspects of care.
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Treatment for paronychia: medication and keeping the nail area dry are key to recovery
Paronychia is a bacterial or fungal skin infection that develops around the nail. It can be caused by biting or chewing the nails, or by working with wet hands or chemicals. Acute paronychia develops quickly, while chronic paronychia has a slower onset, and it can take weeks for treatment to be effective.
If you have mild acute paronychia, you can often diagnose it yourself by looking for throbbing pain, swelling, and redness in the damaged skin around a nail. You can treat mild cases at home by soaking the infected area in warm water for about 15 minutes a few times a day. You can also try adding lemon and salt to the warm water. Be sure to dry the area thoroughly afterward.
If your symptoms do not improve after a day or two of home remedies, see your doctor. They may prescribe an oral antibiotic to clear up the infection. If pus has accumulated near the nail, your doctor will numb the area, drain the pus, and may prescribe a topical or oral antibiotic. They may also take a sample of the pus to test for bacteria or fungi.
If you have chronic paronychia, your doctor will likely recommend antifungal medication, which may include clotrimazole or ketoconazole. It is important to keep the nail area dry and clean to prevent the infection from returning.
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Triggers for paronychia: over-aggressive manicuring, biting nails, diabetes, and constant exposure to water or chemicals
Paronychia is a common nail condition that can be caused by several factors, including over-aggressive manicuring, nail biting, diabetes, and constant exposure to water or chemicals.
Over-aggressive manicuring, such as cutting or tearing the cuticle, can create tiny cracks or cuts in the nails or skin, allowing bacteria to enter and cause an infection. This can lead to acute paronychia, which is a sudden, very painful condition characterized by swelling, warmth, and redness around the nail. It usually occurs after an injury, such as a cut or tear to the nail or cuticle.
Nail biting or biting the skin around the nails can also cause paronychia. Bacteria can enter through small cuts or cracks in the nails or skin, leading to an infection. This habit is particularly common in children, who may also suck their fingers, further increasing the risk of infection.
People with diabetes are more prone to developing paronychia, especially if their blood sugar levels are not well-controlled. Diabetes can affect the body's ability to fight infections, making it easier for bacteria or fungi to invade the skin around the nails. Chronic paronychia is more commonly seen in people with diabetes, often affecting multiple fingers on the same hand.
Occupations that require constant exposure to water or chemicals can also increase the risk of developing paronychia. This includes jobs such as dishwashing, bartending, or housekeeping, where hands are frequently submerged in water or exposed to detergents and other chemicals. The constant moisture and contact with irritants can lead to chronic paronychia, causing gradual swelling, tenderness, and redness around the nails.
To prevent paronychia, it is important to avoid over-aggressive manicuring, especially cutting or tearing the cuticle. Nail biting and finger sucking should also be avoided. For those with diabetes, maintaining normal blood sugar levels through proper diet and medication can help reduce the risk. If your job involves constant exposure to water or chemicals, wearing waterproof gloves can provide protection and reduce the risk of infection.
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Frequently asked questions
There is no mention of a disorder that specifically makes clipping finger nails hurt, however, there are disorders related to nail-biting, nail-picking, and nail tearing that may be relevant. These include onychophagia, onychotillomania, and paronychia.
Onychophagia is a common disorder that involves nail-biting and is found in 20-30% of people. It can occur on the fingernails, thumbnails, toenails, or both hands and feet.
Onychotillomania is an uncommon disorder characterized by compulsive nail-picking or tearing. It is often associated with other body-focused repetitive behaviors and psychiatric conditions such as depression, obsessive-compulsive disorder, and psychosis.
Paronychia is a condition that causes pain, swelling, and redness around the nails. It can be acute, appearing suddenly after an injury, or chronic, developing slowly due to inflammation. Acute paronychia usually heals within 5-10 days with proper treatment, while chronic paronychia may take several weeks.











































