Congenital onychodysplasia of the index fingers
| Congenital onychodysplasia of the index fingers | |
|---|---|
| Other names | Iso-Kikuchi syndrome |
| Specialty | Dermatology |
Congenital onychodysplasia of the index fingers is defined by the presence of the condition at birth, either unilateral or bilateral index finger involvement, variable distortion of the nail or lunula, and polyonychia, micronychia, anonychia, hemi-onychogryphosis, or malalignment.[1]
This condition is also called Iso-Kikuchi syndrome, since Iso was the first author who published it in a Japanese paper.[2]
Signs and symptoms
Numerous nail anomalies are noted, such as uneven lunula, nail malalignment, hemionychogryphosis, polyonychia, micronychia, and anonychia.[3]
Causes
It is still unknown what exactly causes congenital onychodystrophy of the index finger. Nonetheless, there is evidence in favor of hereditary transmission.[3]
Diagnosis
Congenital onychodysplasia of the index fingers is diagnosed based on five criteria:[4]
- Congenital occurrence.[4]
- Bilateral or unilateral index finger involvement.[4]
- Variations in nail appearance.[4]
- Potential hereditary involvement.[4]
- Associated bone abnormalities.[4]
See also
- List of cutaneous conditions
References
- ISBN 978-0-7216-2921-6.
- PMID 6696480.
- ^ a b Haddad, Stefanos F (2023-06-26). "Congenital Onychodystrophy of the Index Fingers: Practice Essentials, Background, Pathophysiology". Medscape Reference. Retrieved 2024-03-07.
- ^ ISSN 0003-987X.
Further reading
- Milani-Nejad, Nima; Mosser-Goldfarb, Joy (2020). "Congenital Onychodysplasia of Index Fingers: Iso-Kikuchi Syndrome". The Journal of Pediatrics. 218. Elsevier BV: 254–254.e1. ISSN 0022-3476.
- YOUN, S.H.; KWON, O.S.; PARK, K.C.; YOUN, J.I.; CHUNG, J.H. (1996). "Congenital onychodysplasia of the index fingers - Iso-Kikuchi syndrome. A case involving the second toenail". Clinical and Experimental Dermatology. 21 (6). Oxford University Press (OUP): 457–458. ISSN 0307-6938.