
Shiny nails can be a sign of trachyonychia, a disorder of the nail unit. Trachyonychia is characterised by rough, longitudinally ridged nails (opaque trachyonychia) or, less frequently, uniform, opalescent nails with pits (shiny trachyonychia). The condition can be caused by trauma to the nail, such as accidentally slamming a door on your finger, or it could be a sign of an underlying issue, including psoriasis, endocarditis, or nail melanoma.
| Characteristics | Values |
|---|---|
| Disorder | Trachyonychia |
| Severity | Less severe |
| Appearance | Shiny, opalescent nails with numerous pits |
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What You'll Learn
- Trachyonychia, a nail disorder characterised by rough, ridged nails or opalescent nails with pits
- The condition is more common in children, but can also occur in adults
- Trachyonychia has two subtypes: opaque and shiny
- Shiny trachyonychia is the less severe type
- Trachyonychia can be linked to alopecia areata

Trachyonychia, a nail disorder characterised by rough, ridged nails or opalescent nails with pits
Trachyonychia is a nail disorder characterised by rough, ridged nails or opalescent nails with pits. The term trachyonychia refers to 'rough nails'. The two different subtypes of trachyonychia are categorised by their clinical appearance and severity. Opaque trachyonychia, the more severe type, is characterised by rough nails that appear to have been rubbed by sandpaper. The less severe type, shiny trachyonychia, is characterised by shiny, opalescent nails with numerous pits. The nail plates may be thickened or thinned. Cuticles are usually thickened and ragged. The nails have many pits within the nail plate and reflect light, giving a shiny appearance. Trachyonychia was initially thought to occur exclusively in children, but cases in adults have also been recognised. It remains more common in the paediatric population, with the peak age of onset between the ages of 3 and 12 years. The incidence of trachyonychia in both adults and children is not known. The lines on your nails could also be a sign of trauma to your nail, such as accidentally slamming a door on your finger, or an underlying issue, including psoriasis, endocarditis, and nail melanoma.
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The condition is more common in children, but can also occur in adults
Trachyonychia is a disorder of the nail unit that can cause shiny nails. Initially thought to occur exclusively in children, cases in adults have also been recognised. The condition is more common in children, with the peak age of onset between 3 and 12 years old. However, it can also occur in adults, with one study finding a female predominance in adult-onset trachyonychia.
Trachyonychia is characterised by two subtypes: opaque trachyonychia and shiny trachyonychia. Opaque trachyonychia is the more severe type, characterised by rough nails that appear to have been rubbed with sandpaper. The less severe type, shiny trachyonychia, is characterised by shiny, opalescent nails with numerous pits. While both subtypes can be associated with alopecia areata, shiny trachyonychia is most often linked to this condition.
The term trachyonychia refers to 'rough nails', and the disorder most commonly presents with rough, longitudinally ridged nails. However, the less common shiny trachyonychia subtype results in uniform, opalescent nails with pits that reflect light, giving a shiny appearance. While the incidence of trachyonychia in both adults and children is not known, it remains a condition that can affect individuals of all ages.
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Trachyonychia has two subtypes: opaque and shiny
Trachyonychia 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 term trachyonychia refers to 'rough nails'. The two subtypes of trachyonychia were first described by Baran in 1981 and are categorised by their clinical appearance and severity. Opaque trachyonychia, the more severe type, is characterised by rough nails that appear to have been rubbed by sandpaper. The less severe type, shiny trachyonychia, is characterised by shiny, opalescent nails with numerous pits. Although both opaque trachyonychia and shiny trachyonychia can be seen in association with alopecia areata, shiny trachyonychia is most often linked to alopecia areata.
Shiny trachyonychia is characterised by nails that reflect light, giving a shiny appearance. The nails have many pits within the nail plate. Trachyonychia was initially thought to occur exclusively in children, but cases in adults have also been recognised. It remains more common in the paediatric population, with the peak age of onset between the ages of 3 and 12 years. The incidence of trachyonychia in both adults and children is not known. One study found childhood-onset trachyonychia to have a male predominance compared to adult-onset trachyonychia, which has been reported to have a female predominance. However, these findings have not been confirmed in other patient populations.
The most likely cause of lines on the nails is trauma to the nail, such as accidentally slamming a door on your finger. In rare cases, the lines could be a sign of an underlying issue, including psoriasis, endocarditis, and nail melanoma.
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Shiny trachyonychia is the less severe type
Trachyonychia 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 term trachyonychia refers to 'rough nails'. The two different subtypes of trachyonychia were first described by Baran in 1981 and are categorised by their clinical appearance and severity. Opaque trachyonychia, the more severe type, is characterised by rough nails that appear to have been rubbed by sandpaper. The less severe type, shiny trachyonychia, is characterised by shiny, opalescent nails with numerous pits. Although both opaque trachyonychia and shiny trachyonychia can be seen in association with alopecia areata, shiny trachyonychia is most often linked to alopecia areata.
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Trachyonychia can be linked to alopecia areata
Trachyonychia 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 term trachyonychia refers to 'rough nails'. The nail plates may be thickened or thinned and the cuticles are usually thickened and ragged. The two different subtypes of trachyonychia were first described by Baran in 1981 and are categorised by their clinical appearance and severity. Opaque trachyonychia, the more severe type, is characterised by rough nails that appear to have been rubbed by sandpaper. The less severe type, shiny trachyonychia, is characterised by shiny, opalescent nails with numerous pits. Although both types can be seen in association with alopecia areata, shiny trachyonychia is most often linked to alopecia areata.
Shiny trachyonychia is characterised by nails that reflect light, giving a shiny appearance. It was initially thought to occur exclusively in children, but cases in adults have also been recognised. It remains more common in the paediatric population, with the peak age of onset between the ages of 3 and 12 years. The incidence of trachyonychia in both adults and children is not known. One study found childhood-onset trachyonychia to have a male predominance, compared to adult-onset trachyonychia, which has been reported to have a female predominance. However, these findings have not been confirmed in other patient populations.
The most likely cause of lines on the nails is trauma to the nail, such as accidentally slamming a door on your finger. In rare cases, the lines could be a sign of an underlying issue, including psoriasis, endocarditis, and nail melanoma. If the lines are due to an injury, they should disappear over time as your nail grows. If you don't notice any change over a few weeks, talk to a doctor, especially if you notice other symptoms, like inflamed skin, night sweats, or bleeding in the nail.
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Frequently asked questions
It could be a sign of trachyonychia, a disorder of the nail unit.
Trachyonychia 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).
Rough nails with excessive longitudinal ridging are typical of trachyonychia. The nail plates may be thickened or thinned, and the cuticles are usually thickened and ragged.
If you think you have trachyonychia, you should speak to a doctor.









































