Noah Sinclair
Purple nails can be caused by a variety of factors, including trauma to the nail or finger, circulatory problems, or certain underlying health conditions. In some cases, purple nails may be a temporary issue that resolves as the body heals, while in others, it may indicate a more serious condition that requires medical attention. Understanding the underlying cause of purple nails is crucial to determining how long the discolouration will persist and the appropriate course of treatment.
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What You'll Learn
Bruising from trauma
A subungual hematoma is a bruised fingernail or toenail that develops after sudden trauma to the nail. This can be caused by blunt force trauma, such as hitting your fingertip with a hammer, or crush injuries, like dropping a heavy object on your toe or finger or slamming your finger in a door. The blood vessels under the nail break and start to bleed, and since the nail is connected to the finger or toe on all sides, the blood gets trapped underneath, causing the nail to turn purple, blue, black, or brown.
Subungual hematomas can be extremely painful due to the pressure generated by the pooled blood under the nail, which puts pressure on the finger or toe nerves. This pressure can cause severe, throbbing pain and can make it difficult to work or perform daily activities. The pain can last for several weeks if not treated promptly.
If you experience a subungual hematoma, it is important to seek medical attention, especially if there is intense pain or continuing discomfort. A healthcare provider can evaluate the extent of the injury and determine the appropriate treatment. In some cases, a simple drainage procedure may be performed to relieve the pressure and provide pain relief. It is important not to attempt drainage at home and always seek medical care.
Most subungual hematomas heal well, but there is a risk for complications such as nail loss and infection. It can take several months for the nail to regrow completely, and during this time, it is important to protect the sensitive skin of the nail bed to prevent dryness and cracking, which can affect how the nail grows. Keeping the area clean and dry is crucial to prevent infection.
While a bruised nail may seem like a minor issue, it is important to take it seriously and seek medical attention when needed. The right care can provide pain relief and help prevent future problems with the nail.
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Vascular blockage
Purple nails can be caused by a lack of oxygen in the blood, known as cyanosis, which can be a result of vascular blockage. This can be caused by peripheral vascular disease (PVD), a slow and progressive disorder of the blood vessels. PVD is characterised by narrowing, blockage, or spasms in a blood vessel, which may affect any blood vessel outside of the heart. This includes the arteries, veins, or lymphatic vessels.
Organs supplied by these vessels, such as the brain or legs, may not get enough blood flow for healthy function. The legs and feet are most often affected. Poor circulation to the toenails means tissues aren’t getting enough oxygen or nutrients to stimulate new nail growth. This can cause the nails to become brittle, change colour, or grow thicker.
There are several treatments for PVD, including angioplasty, stent placement, and atherectomy. Angioplasty involves putting a catheter (thin, flexible tube) to create a larger opening in an artery to increase blood flow. Atherectomy involves "shaving" away the blockage inside the artery with a tiny device on the end of a catheter. A stent placement procedure involves expanding a tiny coil inside the blocked artery to open the blocked area and keep it open.
It is important to note that purple nails can also be caused by a subungual hematoma, which is a bruised fingernail or toenail. This can cause severe, throbbing pain and the nail may be tender to the touch. The bruise will usually grow out over several weeks or months, and it may take up to nine months for the nail to completely return to its normal colour.
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Heart failure
Purple nails may be due to a lack of oxygen in the blood, also known as cyanosis. This can be caused by exposure to cold temperatures, certain lung and heart conditions, circulation problems, issues with haemoglobin, and more. It is important to seek medical attention to determine the cause.
Cyanosis, or purple nails, can be an indicator of heart failure. However, it is important to note that cyanosis can also be caused by other factors such as lung conditions, circulation problems, or exposure to cold temperatures. Therefore, it is always advisable to consult a healthcare provider to determine the underlying cause of cyanosis.
While heart failure itself may not be directly responsible for purple nails in all cases, the condition warrants immediate medical attention. If left untreated, heart failure can lead to serious complications and impact an individual's quality of life. With proper management, however, many people with heart failure can maintain their overall health and well-being.
In summary, purple nails can be a sign of cyanosis, which may be indicative of underlying health issues, including heart failure. It is important to consult a healthcare provider to determine the exact cause of purple nails and to receive appropriate treatment or management for any underlying conditions, such as heart failure.
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Pseudocyanosis
The distinction between pseudocyanosis and cyanosis is not always clear, as the colours may be similar. True cyanosis is described as a 'slate-blue-purple' hue, while pseudocyanosis is more of a 'brownish slate' colour. However, clinically evident bluish discolouration usually occurs only when the methaemoglobin concentration is over 8-10%, and at 15% the pseudocyanosis becomes obvious.
In summary, pseudocyanosis is a condition that can mimic cyanosis but is not true cyanosis. It is caused by drugs or heavy metals that result in a bluish or slate-gray pigmentation of the skin. It is important to distinguish between pseudocyanosis and cyanosis, as cyanosis can indicate serious cardiovascular or pulmonary issues.
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Circulatory problems
Purple nails can be caused by a number of factors, including circulatory problems. One of the most common causes of purple nails is a condition called cyanosis, which is characterised by a lack of oxygen in the blood. This can be caused by a variety of factors, including exposure to cold temperatures, certain lung and heart conditions, circulation problems, issues with haemoglobin, and more.
Cyanosis can affect people of all ages and can impact various parts of the body, including the lips, gums, hands, soles of the feet, and the skin around the eyes. It is important to see a healthcare provider if you are experiencing purple nails, as it could indicate an underlying health condition. In some cases, cyanosis may require immediate medical attention.
One possible cause of cyanosis is peripheral cyanosis, which is often caused by cold exposure and vasospasms. This can lead to blue or purple discolouration in the nails, fingers, toes, and nose. Peripheral cyanosis is associated with the same underlying conditions as central cyanosis, which is linked to structural heart issues present at birth.
Another potential cause of purple nails is a subungual hematoma, which is a bruised fingernail or toenail that may cause severe, throbbing pain. This usually occurs due to blunt force trauma or crush injuries, but it can also be caused by repetitive pressure over time, such as running in shoes that are too tight. The injury causes blood to pool under the nail, leading to pain and discolouration. While subungual hematomas are generally not a cause for concern, they can sometimes lead to bacterial infections or other complications. It is important to seek medical care if you are experiencing intense pain or other concerning symptoms.
In summary, purple nails can be a sign of circulatory problems and other underlying health conditions. It is important to consult a healthcare provider to determine the cause and receive appropriate treatment. While some cases of purple nails may resolve on their own, such as those caused by cold temperatures, others may require immediate medical attention.
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Frequently asked questions
It depends on the cause of the discolouration. If it is due to a subungual haematoma, the purple colour will usually disappear as the nail grows out. However, if the discolouration is due to an underlying medical condition, such as cyanosis, it may persist until the underlying condition is treated.
A subungual haematoma is a collection of blood under the nail plate that occurs following trauma or injury to the nail or finger, such as a strong blow or pressure from tight shoes.
Recognisable symptoms include dark red or purple discolouration of the nail, throbbing pain, and possible swelling in the surrounding area.
