A Cross-Sectional Evaluation of the Usefulness of the Minor Features of Hanifin and Rajka Diagnostic Criteria for the Diagnosis of Atopic Dermatitis in the Pediatric Population.

BACKGROUND

Atopic dermatitis (AD) is a chronic, relapsing inflammatory skin disease. Hanifin and Rajka's criteria is the most common diagnostic criteria used for the clinical diagnosis of this condition. However, many find that it is too exhaustive to be used in routine practice, and the specificity of many of the minor criteria poses challenges, particularly from Asian countries with type III, IV, and V skin.

AIMS AND OBJECTIVES

The aim of the study is to evaluate the effectiveness of the minor features of the Hanifin and Rajka criteria for AD in comparison to the UK working party's diagnostic criteria in pediatric populations of India.

METHODOLOGY

A hospital-based cross-sectional study of 100 patients in the pediatric age group (3 months-12 years) with AD was conducted based on history, clinical, and laboratory evaluation. An age-matched control group of 100 pediatric patients who did not have a personal or family history of atopic dermatitis was included after obtaining informed consent to find out the prevalence of minor criteria among the control group.

RESULTS

Mean of the number of minor clinical criteria found positive in our study population in the infantile and toddler (below 2 years) and childhood groups (2-12 years) was (4.72 ± 1.75) and (5.67 ± 1.78), respectively. Early-onset of disease was the most consistent feature among the minor criteria found in 83% of patients, followed by xerosis (71%), hyperlinearity of palm (56%), pityriasis alba (54%), Denny Morgan fold (52%), elevated serum IgE (47%), perifollicular accentuation (37%), and tendency toward cutaneous infections (37%).

CONCLUSION

We found that though some of the minor criteria are highly sensitive and specific to the diagnosis of AD (xerosis, ichthyosis, palmar hyperlinearity, tendency of cutaneous infections, Dennie-Morgan infraorbital fold, pityriasis alba, and perifollicular accentuation), some other criteria were either very rare or nonspecific for AD. We suggest that many of the minor criteria of Hanifin and Rajka may not have much significance for Indian patients and a multicentric nationwide study with a larger patient pool is required to create a trimmed and improved version of Hanifin and Rajka criteria.