Practical guidelines for evaluation of loose anagen hair syndrome.
نویسندگان
چکیده
OBJECTIVES To better categorize the epidemiologic profile, clinical features, and disease associations of loose anagen hair syndrome (LAHS) compared with other forms of childhood alopecia. DESIGN Retrospective survey. SETTING Academic pediatric dermatology practice. Patients Three hundred seventy-four patients with alopecia referred from July 1, 1997, to June 31, 2007. MAIN OUTCOME MEASURES Epidemiologic data for all forms of alopecia were ascertained, such as sex, age at onset, age at the time of evaluation, and clinical diagnosis. Patients with LAHS were further studied by the recording of family history, disease associations, hair-pull test or biopsy results, hair color, laboratory test result abnormalities, initial treatment, and involvement of eyelashes, eyebrows, and nails. RESULTS Approximately 10% of all children with alopecia had LAHS. The mean age (95% confidence interval) at onset differed between patients with LAHS (2.8 [1.2-4.3] years) vs patients without LAHS (7.1 [6.6-7.7] years) (P < .001), with 3 years being the most common age at onset for patients with LAHS. All but 1 of 37 patients with LAHS were female. The most common symptom reported was thin, sparse hair. Family histories were significant for LAHS (n = 1) and for alopecia areata (n = 3). In 32 of 33 patients, trichograms showed typical loose anagen hairs. Two children had underlying genetic syndromes. No associated laboratory test result abnormalities were noted among patients who underwent testing. CONCLUSIONS Loose anagen hair syndrome is a common nonscarring alopecia in young girls with a history of sparse or fine hair. Before ordering extensive blood testing in young girls with diffusely thin hair, it is important to perform a hair-pull test, as a trichogram can be instrumental in the confirmation of a diagnosis of LAHS.
منابع مشابه
A 3-year-old girl with thin hair.
CME EDUCATIONAL OBJECTIVES: 1.Identify the clinical features of loose anagen syndrome.2.Distinguish between loose anagen syndrome and other types of alopecia in a young child.3.Understand the natural history of loose anagen syndrome. A healthy 3-year-old white girl presented to the pediatric dermatology clinic for evaluation of thin hair. She was born with little hair and slowly grew thin blond...
متن کاملNoonan syndrome with loose anagen hair associated with trichorrhexis nodosa and trichoptilosis
We report a case of Noonan syndrome with loose anagen hair (NS/LAH), a rare variant of Noonan syndrome, with associated trichorrhexis nodosa and trichoptilosis. The SHOC2 mutation may be responsible for these additional hair shaft defects, revealing the importance of microscopic examination of hairs in these patients.
متن کامل[Methods of hair loss evaluation in patients with endocrine disorders].
Hair loss may accompany several endocrine disorders, including hypopituitarism, hypothyreosis, hyperthyreosis, hypoparathyroidism, diabetes mellitus, growth hormone deficiency, hyperprolactinaemia, polycystic ovary syndrome, SAHA syndrome, congenital adrenal hyperplasia, Cushing syndrome, or virilising tumours. Most patients with endocrine disorders present with diffuse non-scarring alopecia, s...
متن کاملMethods of hair loss evaluation in patients with endocrine disorders Metody diagnostyki łysienia u pacjentów z endokrynopatiami
Hair loss may accompany several endocrine disorders, including hypopituitarism, hypothyreosis, hyperthyreosis, hypoparathyroidism, diabetes mellitus, growth hormone deficiency, hyperprolactinaemia, polycystic ovary syndrome, SAHA syndrome, congenital adrenal hyperplasia, Cushing syndrome, or virilising tumours. Most patients with endocrine disorders present with diffuse non-scarring alopecia, s...
متن کاملAdult onset loose anagen hair syndrome with alopecia totalis
A young adult male patient presented with diffuse hair loss of two years duration. Clinical features and investigations were suggestive of loose anagen hair syndrome. He developed alopecia totalis during follow-up. Scalp biopsy revealed perifollicular lymphocytic infiltration. A diagnosis of adult-onset loose anagen hair syndrome with alopecia areata was made. Introduction Loose anagen hair syn...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Archives of dermatology
دوره 145 10 شماره
صفحات -
تاریخ انتشار 2009