Clubbed fingers occur when soft tissues at the fingertips become swollen and spongy. This straightens the natural curvature of the nail bed, causing a clubbed appearance.
A person experiencing clubbing should see a doctor to look into the underlying cause and potentially treat it as soon as possible.
Read on to learn more about what clubbed fingers are, their symptoms, common causes, diagnosis, and treatment.
Some medical conditions
These changes gradually straighten the natural dip where the finger meets the nail bed and
In later stages, the nails may become especially shiny or glossy, and long vertical marks
Clubbing can also cause the nail beds to look and feel like they are floating on a cushion. The nail beds
Clubbing tends to affect the thumb and forefinger first before progressing to the other fingers. Symptoms of clubbed fingers
A range of underlying conditions can cause clubbing,
The increase of PDGF and VEGF increases blood vessel vasculature and permeability, and ultimately causes tissue changes.
Several other signaling proteins are also
Clubbing is almost always a symptom of an underlying condition.
Most causes of clubbing are acquired, meaning they develop after birth.
Causes fall into one of four categories: infectious conditions, inflammatory conditions, neoplasms (abnormal growths), and vascular disease.
In some cases clubbing can also be a benign, hereditary condition that develops due to genetic mutations.
Some of the most common conditions known to cause clubbing
Conditions that reduce lung function can reduce circulating oxygen levels and trigger clubbing. Lung diseases, especially cancer, are the
Signs of lung disease include:
- chronic cough (present 8 weeks or longer)
- difficulty breathing, such as wheezing or shortness of breath that does not go away after exercise or occurs for no reason
- unexplained pain in the chest that lasts a month or more, especially pain that increases when a person is breathing in and out
- excessive mucus production that occurs for a month or more
- coughing up blood
Conditions that interfere with the blood circulation can also reduce circulating oxygen levels and trigger clubbing, especially in the extremities.
Symptoms associated with cardiovascular causes of clubbing include:
- shortness of breath
- chronic cough or wheezing, especially if accompanied by blood-tinged mucus
- waking up feeling tired, anxious, or restless even after a good night’s sleep
- swelling, especially in the ankles, legs, feet, and abdomen
- unexplained chronic exhaustion
- memory loss or feeling disoriented
- rapid heart palpitations
- lack of appetite or nausea
- discomfort in the center of the chest or in the arms, back, neck, jaw, or stomach
- cold sweat
Chronic liver disease
When the liver is not functioning properly, the blood vessels dilate, which can reduce the lungs’ ability to oxygenate the blood. Many people do not know they have liver disease until it has progressed to later stages.
- bleeding or bruising easily
- swelling in the abdomen or legs
- yellowish skin and eyes
- very itchy skin
- problems with concentration, memory, sleeping, and other mental functions
- insulin resistance or type 2 diabetes
Chronic gastrointestinal conditions
The lungs rely on energy to function and transfer oxygen throughout the body. They get this energy from foods that the digestive system breaks down.
The intestines normally function with reduced blood oxygen levels. However, some chronic gastrointestinal (GI) conditions can cause inflammation and reduce oxygen levels further.
Symptoms associated with GI conditions known to reduce circulating oxygen levels include:
- dry cough
- chest pain
- hoarseness or sore throat
- trouble swallowing
- sensation of a lump in the throat
- burning in the throat or chest
- reduced appetite, abdominal pain or cramps, vomiting, and nausea
- frequent constipation or diarrhea
- unexplained weight loss
- chronic bloating and gas
- unexplained exhaustion, weakness, or fever
- mucus in stool
Though far less common, autoimmune diseases, such as thyroid acropachy, can cause clubbing.
Thyroid acropachy is associated with Graves’ disease and
Damage to blood vessels, or injuries or deformities that block them, can reduce circulating oxygen levels and trigger clubbing.
Symptoms of trauma typically include:
- redness or warmth
- loss of sensation or tingling, pins and needles, burning pain, or numbness
- visible signs of injury, such as cuts, open sores, and broken or deformed bones
To diagnose clubbing, a doctor will perform a physical examination of the impacted fingers and take a complete patient history, asking questions about the presence or absence of symptoms of conditions associated with clubbing.
A doctor may also ask questions about someone’s family history to determine if a genetic condition may be causing the clubbing.
If clubbing is present, a doctor will normally order imaging tests to evaluate the lungs and heart, such as a chest X-ray. If these images are clear or inconclusive, a doctor may order a CT scan to look for abnormal growths.
Dozens of other tests can help determine the underlying condition and its severity, including blood tests, blood gas tests, and tests that assess lung function.
A doctor may also require biopsies and exploratory surgeries to diagnose or rule out the presence of certain GI conditions, cancer, autoimmune disorders, and blood vessel conditions.
The best treatment for clubbed fingers depends on the underlying cause.
How likely someone is to fully recover from clubbing depends almost entirely on how severe or progressed the condition is, and how early a person seeks help from a doctor to diagnose and treat it.
Treatments for conditions that may cause clubbing include:
- cancer treatments
- immune medications, such as biologics and immunomodulators
- surgery to remove abnormal growths or obstructions
- surgery to repair GI damage or remove certain structures
- liver or lung transplant
- oxygen therapy
- getting enough vitamin D and calcium
- antithyroid or thyroid hormone regulating medications
- avoiding foods that may trigger a specific condition a person has, such as a gluten or dairy intolerance
A person may also want to maintain their overall health by eating a healthful diet. This may help lower the risk of many of the health conditions that can cause clubbed fingers.
Treating the underlying cause of clubbing
In some cases, in particular congenital cases, corrective surgery may be necessary.
Anyone who thinks they may be experiencing clubbing should contact a medical professional as soon as possible.
Getting proper treatment for the underlying cause of clubbing is
Left untreated, several common conditions associated with clubbing can cause organ damage, disability, coma, and death.
Clubbed fingers occur when the soft tissues of the fingers swell, become spongy, and slowly straighten the curvature of the nail bed.
Clubbing typically occurs as the result of chronic gastrointestinal conditions or conditions that interfere with circulating oxygen levels. Some genetic conditions can also cause clubbing.
Cases of clubbing