Treatment and Classification of Nevus of Ota: A Seven-Year Review of a Single Institution's Experience
Annals of Dermatology
;
: 446-453, 2017.
Article
in English
| WPRIM
| ID: wpr-86515
ABSTRACT
BACKGROUND:
Nevus of Ota (NO) is a relatively common pigmentary disorder in Asians. Tanino's classification is an old but tacit consensus to delineate the disease. Various treatment options have been presented. However, a few studies have been conducted on available laser options and current treatment strategies or the classification of NO.OBJECTIVE:
To investigate current laser options and their effectiveness for the treatment of NO, contributing factors to clinical outcomes, and verification of classification.METHODS:
A retrospective study of NO was conducted by reviewing medical charts and photographs of sixty-seven patients. Statistical analysis was used to compare excellent and poor outcomes and determine contributing factors.RESULTS:
The median age of onset was below the age of 1 (interquartile range [IQR], 0~1). Tanino's and PUMCH classification systems failed to classify patients in 24 (35.8%) and 6 (9.0%) of patients, respectively. A 1,064 nm Q-switched NdYAG laser without additional lasers was used most frequently in 42 patients (62.7%). The frequency of treatment was 19.0 (IQR, 10.0~23.0) in the cured group defined as subjects showing 95% improvement or above, compared to 10.0 (IQR, 6.25~13.75) in the unattained group defined as subjects showing less than 95% improvement (p=0.001).CONCLUSION:
A 1,064 nm Q-switched NdYAG laser is a reliable treatment armamentarium, functioning as a single infallible modality as well as a combination treatment modality for NO. Repetitive laser treatments without interruption seems to be the most suitable in clearing NO. The current classification systems of NO are defective. Thus, a new classification should be developed.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pigmentation
/
Retrospective Studies
/
Nevus of Ota
/
Classification
/
Age of Onset
/
Consensus
/
Asian People
/
Laser Therapy
/
Nevus
Type of study:
Practice guideline
/
Observational study
Limits:
Humans
Language:
English
Journal:
Annals of Dermatology
Year:
2017
Type:
Article
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