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High altitude koilonychia
1IG Medical College, Shimla.
The Journal of the Association of Physicians of India
|April 25, 2000
Summary
Koilonychia, a nail condition, affects 6.99% of high-altitude residents. This study found it is more common in upper limbs and linked to slowed nail plate growth.
Area of Science:
- Medical Science
- Dermatology
- High-Altitude Physiology
Background:
- Koilonychia, or spoon nails, is a nail deformity.
- High-altitude environments may influence physiological conditions.
Purpose of the Study:
- To determine the incidence of koilonychia among individuals residing at high altitudes.
- To investigate potential contributing factors and patterns of koilonychia in this population.
Main Methods:
- Nail examination for koilonychia in patients at a Himalayan medical camp (12,500 ft).
- Exclusion of residents below 10,000 ft; detailed history and physical exams conducted.
- Routine laboratory tests and serum ferritin levels were assessed in a subset of patients.
Main Results:
- Koilonychia was observed in 6.99% (67/986) of high-altitude residents.
- The condition was more prevalent in the upper limbs and associated with various comorbidities.
- Normal hemoglobin and serum ferritin levels were noted in tested individuals.
Conclusions:
- Koilonychia occurs in 6.99% of the high-altitude population studied.
- The condition is attributed to retarded nail plate growth and is more frequently seen in upper limbs.
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