Isla Bennett
Trachyonychia, also known as twenty-nail dystrophy, is a disorder of the nail unit that causes nails to become thin, brittle, and rough. The term is derived from the Greek trachus meaning rough and onyx meaning nail. While the condition is not harmful to the patient, it can negatively impact their quality of life. Trachyonychia can occur in individuals of all ages but is most commonly seen in children and young adults. It has been associated with various dermatological disorders, and its pathogenesis remains unclear.
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What You'll Learn
- Trachyonychia is a disorder of the nail unit
- It is characterised by rough, brittle nails with longitudinal ridges
- It is not harmful but can negatively impact quality of life
- Trachyonychia can be associated with dermatological disorders
- Diagnosis is based on clinical appearance, but nail clippings can be performed
Trachyonychia is a disorder of the nail unit
Trachyonychia can cause nails to become opalescent, thin, dull, fragile, finely longitudinally ridged and distally notched. The nails may also split at the free margin. The condition can be a manifestation of other disorders, including lichen planus, psoriasis, alopecia areata, immunoglobulin A deficiency, atopic dermatitis, and ichthyosis vulgaris. It has also been associated with vitiligo. Trachyonychia has been observed in patients with underlying diseases, and treating the associated disease may help improve the appearance of the nails.
There are two subtypes of trachyonychia, categorised by their clinical appearance and severity. The first type is opaque trachyonychia, characterised by a nail plate that demonstrates longitudinal ridges; the nails are opaque, rough, and have a "sandpapered" appearance. The second type is shiny trachyonychia, which features a nail plate that contains numerous small pits, arranged in both longitudinal and parallel lines. The nails have a shiny appearance, and the nail plate is not opaque. In both subtypes, koilonychia (spoon-shaped nails) can be observed, and fingernails are more commonly affected than toenails.
Trachyonychia is primarily diagnosed based on clinical appearance, but nail clippings and nail unit biopsies may be performed to evaluate for the presence of fungus or other underlying conditions. Treatment may not always be necessary, as trachyonychia can sometimes improve or resolve spontaneously. However, various treatment options are available for those who request it, including emollients, nail polish, and weekly nail plate dressings with agents such as lactic acid, silicon dioxide, or aluminium acetylacetonate.
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It is characterised by rough, brittle nails with longitudinal ridges
Trachyonychia is a disorder of the nail unit that is characterised by rough, brittle nails with longitudinal ridges. The term "trachyonychia" refers to "rough nails", and the condition is also known as twenty-nail dystrophy or "sandpaper nails". It can affect any number of nails, although it is most commonly seen in children and young adults, with a peak incidence between 3 and 12 years of age. The severity of the condition can vary between different nails within the same patient, and it is possible for both opaque and shiny varieties to coexist.
The pathogenesis of trachyonychia remains unclear, but it is hypothesised that inflammation within the nail matrix plays a role in its development. The nail plates may be thickened or thinned, and the cuticles are usually thickened and ragged. Trachyonychia can be classified into two subtypes based on clinical presentation and severity: opaque trachyonychia and shiny trachyonychia. Opaque trachyonychia is characterised by opacity and longitudinal ridging, while shiny trachyonychia presents with a bright and shiny nail plate that contains numerous small pits arranged in both longitudinal and parallel lines.
Trachyonychia is primarily a clinical diagnosis based on history, full skin examination, and characteristic nail changes. Dermoscopy may reveal distinctive changes such as scaling, longitudinal ridging, pitting, and thickened and ragged cuticles. Nail clippings can be performed to evaluate for the presence of fungus or associated disorders, and nail unit biopsies typically show a spongiotic pattern in the matrix. Treatment options for trachyonychia include observation, reassurance, counselling, emollients, nail polish, and weekly nail plate dressings with agents such as lactic acid, silicon dioxide, or aluminium acetylacetonate.
While trachyonychia is not harmful to the patient, nail diseases have been shown to negatively impact patients' quality of life. There is no single evidence-based therapy that is reliably effective, and treatment options are typically chosen based on limited data. In patients with trachyonychia associated with an underlying disease, treatments for the associated disease may help improve the appearance of the nails.
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It is not harmful but can negatively impact quality of life
Trichonychia is a condition that affects the nails, causing them to become rough and ridged. While it is not a harmful condition in terms of physical health, it can have a significant impact on an individual's quality of life. The appearance of the nails can be a source of embarrassment and self-consciousness, leading to psychological distress and negative self-image. The condition can also impact daily activities and personal routines, particularly those involving the hands and nails, such as grooming and hygiene practices.
The impact of trachyonychia on quality of life can vary depending on the severity of the condition and the individual's personal experiences and perceptions. For some people, the condition may only be a minor nuisance, while for others, it can be a source of
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Trachyonychia can be associated with dermatological disorders
Trachyonychia, or rough nails, is a disorder of the nail unit that most commonly presents with rough, longitudinally ridged nails (opaque trachyonychia) or, less frequently, uniform, opalescent nails with pits (shiny trachyonychia). The condition can evolve idiopathically or in association with a wide variety of dermatological and nondermatological diseases.
Trachyonychia has been associated with several dermatological disorders, including alopecia areata, psoriasis, lichen planus, and onychomycosis. Alopecia areata is a condition that causes hair loss, and it has been reported that trachyonychia is more common in male patients with this condition. Psoriasis and lichen planus are both autoimmune diseases that can affect the skin, nails, and joints. Onychomycosis is a fungal nail infection that can sometimes have a similar clinical appearance to trachyonychia, so a proper evaluation is necessary for an accurate diagnosis.
In addition to these primary dermatological disorders, trachyonychia has also been associated with immunoglobulin A deficiency, atopic dermatitis, and ichthyosis vulgaris. Immunoglobulin A deficiency is a type of immune deficiency that can increase the risk of infections, while atopic dermatitis is a type of eczema that causes dry, itchy, and inflamed skin. Ichthyosis vulgaris is a genetic disorder that affects the skin, causing dry, scaly skin.
The diagnosis of trachyonychia can be challenging, especially when the nails are the only affected area. A comprehensive evaluation includes a personal and family history of skin disorders, as well as an examination of the skin, mucosa, and hair to evaluate for associated disorders. While there is no universally accepted treatment for trachyonychia, treatments often target the underlying disorder. For example, in cases of trachyonychia associated with alopecia areata, treatments such as tazarotene gel or oral betamethasone have shown improvement.
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Diagnosis is based on clinical appearance, but nail clippings can be performed
Trachyonychia is a benign nail disorder characterised by rough, brittle nails with longitudinal ridging. It can affect any number of nails, although it is known as twenty-nail dystrophy when it affects all 20 nails. The condition can occur in individuals of all ages but is most common in children and young adults, with a peak incidence between 3 and 12 years of age. It has been reported in both males and females, with no significant gender predilection.
The diagnosis of trachyonychia is primarily based on clinical appearance, including the characteristic nail changes and the patient's history. The nails typically appear rough and sandpaper-like, with prominent longitudinal ridging and frequent nail splitting (onychoschizia). The nail plates may be thickened or thinned, and the cuticles are usually thickened, irregular, and ragged, with superficial scaling. In some cases, the nails may also exhibit pitting, loss of lustre, or a roughened nail plate.
While the diagnosis is mainly clinical, certain tests can assist in confirming the condition and excluding other nail disorders. Dermoscopy may reveal distinctive changes such as scaling, longitudinal ridging, pitting, and thickened and ragged cuticles. Nail clippings can be performed to exclude fungal nail infections or associated disorders, such as onychomycosis, which can have similar clinical features to trachyonychia. However, it is important to note that nail clippings are not always necessary for the diagnosis of trachyonychia.
Although trachyonychia is not harmful to the patient, it can negatively impact their quality of life, particularly in adults with professions that require frequent interaction with the public. Treatment options are available, but there is no single evidence-based therapy that is consistently effective for all patients. Treatment is often focused on improving the cosmetic appearance of the nails rather than addressing the underlying condition. In some cases, trachyonychia may resolve spontaneously over time without any intervention.
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Frequently asked questions
Trachyonychia is a disorder of the nail unit that presents as rough, brittle nails with longitudinal ridges. It is also known as 'rough nails' or 'sandpaper nails'.
There are two types of trachyonychia: opaque trachyonychia and shiny trachyonychia. Opaque trachyonychia features a nail plate that demonstrates longitudinal ridges; the nails are opaque, rough, and have a “sandpapered” appearance. Shiny trachyonychia features a nail plate that contains numerous small pits, arranged in both longitudinal and parallel lines. The nails have a shiny appearance, and the nail plate is not opaque.
Trachyonychia can involve any number of nails, from one to all twenty nails. When all twenty nails are affected, it is known as twenty-nail dystrophy.
The pathogenesis of trachyonychia is unclear, but it is hypothesized that inflammation within the nail matrix is involved in the development of the disease. Trachyonychia has been associated with a variety of dermatological disorders, including lichen planus, psoriasis, and alopecia areata.
Treatment for trachyonychia may not always be necessary as it can improve or resolve spontaneously over time. In some cases, observation, reassurance, counselling, and active non-intervention may be recommended. Various treatment options are available for those who request treatment, including emollients, nail polish, and weekly nail plate dressings.
