
Nail growth that deviates from the normal pattern can be annoying and bothersome. This phenomenon, known as onychogryphosis or ram's horn nails, occurs when one side of the nail grows faster than the other, resulting in thick and curvy nails that resemble horns or claws. While it predominantly affects toenails, particularly the big toes, it can also impact fingernails. Various factors, including vitamin or nutrient deficiencies, illnesses, infections, and chronic conditions, can interrupt nail growth and contribute to this condition. Treatment options range from proper nail care and footwear choices to medical interventions such as antifungal medications, steroid injections, and, in severe cases, surgery. Understanding the underlying causes is crucial to effectively address and manage sideways nail growth.
| Characteristics | Values |
|---|---|
| Condition | Onychogryphosis (Ram's Horn Nails) |
| Cause | Peripheral vascular disease, also called peripheral artery disease (PAD), causes the arteries in your legs to build up with plaque, reducing blood flow to your legs and feet. Other causes include foot trauma, infection, and wearing ill-fitting shoes. |
| Treatment | Surgery is the primary treatment option for onychogryphosis. Other treatments include steroid injections in the nail beds, antifungal medication, splints, and pads to train the nails to grow normally. |
| Prevention | Wear clean cotton socks to prevent fungal infections, and clip nails straight across to avoid ingrown nails. |
| Similar Conditions | Beau's Lines, Onychomycosis |
| Similar Conditions Characteristics | Beau's Lines are horizontal ridges or dents in the nails caused by vitamin or nutrient deficiencies, illnesses, infections, or chronic conditions. Onychomycosis is a fungal infection that causes nails to become thick, crinkly, and brittle. |
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What You'll Learn

Nail matrix damage
The nail matrix is the region where your body produces the cells that form your nails. It is located at the base of the nail and has two parts: the germinal matrix and the sterile matrix. The germinal matrix is responsible for about 90% of nail production, while the sterile matrix keeps the nail attached to the underlying skin.
Injuries and certain health conditions can damage the nail matrix and interfere with nail growth. Trauma to the nail matrix can cause the production of new nail cells to stop for up to three weeks. Nail growth may resume at a faster rate after about 100 days, but the nail may appear thicker than usual. Deep cuts or trauma to the germinal matrix can even result in the nail never growing back.
In the case of severe nail matrix damage, some or all of the nail may not grow back. Minor matrix damage can also cause temporary changes to the nail's appearance, such as dents, horizontal ridges or lines, pain or soreness, splits or cracks, spots or streaks of colour, and texture changes (e.g., thicker or crumbly nails). Beau's lines, which are horizontal ridges or dents in one or more nails, can be caused by trauma or damage to the nail matrix. They can also be caused by vitamin or nutrient deficiencies, illnesses, infections, or chronic conditions that interfere with blood flow to the nail matrix.
It is important to note that damage to the nail matrix or finger is usually irreversible. While it is rare for the nail matrix to be permanently damaged, preventing the nail from growing back, it is still possible. If you notice any changes to your nails, it is recommended that you seek advice from a healthcare provider to determine the underlying cause and receive appropriate treatment.
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Nutrient deficiencies
Vitamin C deficiency, for example, can cause splinter haemorrhages, which appear as thin red, brown, or black lines under the nails. These lines run longitudinally, along the direction of nail growth.
Zinc deficiency can cause Beau's lines, which are horizontal ridges or dents in one or more nails. Beau's lines can also be caused by severe emotional stress, illness, injury, or chronic conditions. They are usually harmless and treating the underlying cause can help them to disappear. Consuming foods high in zinc can help treat Beau's lines caused by zinc deficiency.
Iron deficiency can cause koilonychia, also known as spoon nails, where the nails become so soft and curved that they can hold a droplet of water. Spoon nails can also be caused by increased blood flow to the fingertips, which can run in families and may be harmless. However, they may also indicate iron-deficiency anaemia, which involves the thickening of the tissue underneath the nail, causing the fingertips to become rounded and the nails to curve over them.
Vitamin deficiencies can also cause nails to become brittle, weak, rough, and lose their smoothness. This can be due to inadequate dietary intake of vitamins or poor nutrient absorption due to certain health conditions affecting the digestive system. Consuming a variety of whole foods, such as fruits, vegetables, and whole grains, can provide the body with the necessary vitamins, minerals, and nutrients for nail health. Additionally, taking supplements, such as biotin and horsetail, can help improve nail health.
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Chronic conditions
Beau's lines are horizontal ridges or dents in one or more fingernails or toenails. They are a sign that an illness, injury, or skin condition interrupted nail growth. Chronic conditions that interfere with blood flow to the nail matrix can cause Beau's lines. Such conditions include hypothyroidism, peripheral artery disease (PAD), and Raynaud's phenomenon. Severe skin conditions can also damage the nail matrix, and vitamin or nutrient deficiencies can interrupt nail growth. For instance, severe zinc deficiency or insufficient protein intake may result in Beau's lines.
Onychogryphosis, also known as Ram's Horn Nails, is a nail disease that causes one side of the nail to grow faster than the other. This condition can develop due to repeated minor foot trauma, such as wearing shoes that are too small. It is also associated with underlying conditions like hammer toe and peripheral vascular disease. Onychomycosis, a fungal infection that affects the nails, can lead to or complicate Ram's Horn Nails.
In some cases, curved or ingrown nails can indicate underlying chronic health issues such as iron deficiency anemia or psoriasis. Additionally, koilonychia, also known as spoon nails, can be a symptom of iron-deficiency anemia.
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Skin conditions
While nails growing sideways was not explicitly mentioned in my search, I did find information about nail abnormalities, including curving nails, which may be relevant to your query. Curved or ingrown nails can sometimes indicate an underlying health condition that needs attention, such as iron deficiency anaemia. Curving nails may also be caused by a fungal infection, or chronic skin conditions such as psoriasis, eczema, or Raynaud's phenomenon. Nails that curve far inward at the sides, known as ingrown nails, may be due to wearing tight shoes or cutting the nails improperly.
In addition to skin conditions, nail abnormalities can be indicative of other health issues. For example, horizontal ridges or dents in the nails, known as Beau's lines, can be caused by various factors, including severe illness with a high fever, physical trauma, manicures or artificial nails, and chronic conditions that interfere with blood flow to the nail matrix, such as peripheral artery disease (PAD) or hypothyroidism. Mental and emotional stress, as well as nutritional deficiencies like zinc deficiency, can also contribute to Beau's lines.
It is important to consult a board-certified dermatologist or healthcare provider if you notice any changes in your nails, as they can provide expertise in diagnosing and treating skin, hair, and nail conditions. While some nail abnormalities may be harmless, others may indicate underlying health issues that require medical attention.
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Peripheral vascular disease
The most common cause of PVD is atherosclerosis, which is the buildup of plaque inside the artery wall. This plaque reduces blood flow to the limbs, leading to decreased oxygen and nutrient supply to the tissues. Other conditions that can worsen PVD include diabetes, high blood pressure, and high cholesterol.
The main goals of PVD treatment are to control symptoms and prevent disease progression. Treatment options include lifestyle changes such as regular exercise, improved nutrition, and smoking cessation. Additionally, aggressive treatment of underlying problems, such as diabetes, high blood pressure, and high cholesterol, is important. Medicines, such as antiplatelet drugs and blood vessel wall relaxants, can also be prescribed to improve blood flow. In more severe cases, vascular surgery or angioplasty may be required to restore blood flow.
It is important for individuals with PVD to monitor their nail health and consult a healthcare provider if they notice any nail changes, as these can be indicators of the disease. Nail inspection is a simple and accessible task that can help identify PVD in its early stages, allowing for prompt intervention and improved quality of life.
If you suspect you may have peripheral vascular disease, it is important to seek medical advice from a healthcare professional, who can provide a proper diagnosis and recommend appropriate treatment options.
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Frequently asked questions
Your nails might have Beau's lines, which are horizontal ridges or dents caused by vitamin or nutrient deficiencies, illnesses, injuries, or infections. Alternatively, you might have onychogryphosis, a nail disease that causes one side of the nail to grow faster than the other, resulting in thick and curvy nails that resemble ram's horns.
Beau's lines appear as horizontal ridges or dents in one or more nails. They can indicate an injury or illness, with thicker lines suggesting a longer-lasting condition.
Onychogryphosis can be caused by peripheral vascular disease, foot trauma, infection, or a condition like hammer toe. It is also associated with wearing ill-fitting shoes and can be treated with surgery or antifungal medication.
Treating the underlying cause of Beau's lines is essential. You can temporarily hide the ridges with nail products, but use them with caution as they can weaken or damage your nails.
Yes, you can work with a nail technician to shape your nails to give the illusion of straightness.










































