Trichoscopy in common scalp alopecia: an observational study

Abstract

<p class="abstract"><strong>Background:</strong> Many patients of alopecia are encountered in daily practice with diagnostic dilemma. Trichoscopy is a sensitive, non-invasive tool which aids in clinical diagnosis.</p><p class="abstract"><strong>Methods:</strong> An observational study performed in adult patients with alopecia attending R.D. Gardi Medical College, Ujjain, over a period of one year. Trichoscopy was performed using a Dinolite digital microscope with both polarized and non polarized modes.<strong></strong></p><p class="abstract"><strong>Results:</strong> 269 patients of alopecia (257 non cicatricial, 12 cicatricial) aged 18-50 years were enrolled. The diagnosis was made after detailed history and clinical examination. 173 (64.3%) males and 96 (35.7%) females. 45.4% patients were diagnosed to have alopecia areata in which yellow dots were the most common trichoscopic finding observed in 88.5% patients. 37.2% patients were diagnosed with androgenetic alopecia with hair diameter diversity >20% observed in all the patients. 9.3% patients were diagnosed to have telogen effluvium with short vellus hair seen in 64% patients. 3.7% of the patients were diagnosed to have seborrheic dermatitis with arborizing vessels being the most common finding seen in 90% patients. 2.9% patients were diagnosed with lichen planopilaris in which loss of follicles and peritubular white casts were seen in all the cases. 0.9% patients were diagnosed to have discoid lupus erythematosus with hyperkeratotic follicular plugging seen in all the cases. Overall yellow dots were the most common trichoscopic findings seen in 61% cases.</p><p class="abstract"><strong>Conclusions:</strong> Trichoscopy is a reliable diagnostic tool in hair and scalp disorders. Hence trichoscopic evaluation should be done in every case of alopecia. </p><p class="abstract"> </p>

Assessment, reliability, and validity of trichoscopy in the evaluation of alopecia in women

“…Hair shaft diameter diversity, or anisotrichosis, is the most common feature observed in FPHL and reflects hair miniaturization due to disease ( Sewell et al, 2007 ). Hair shaft diameter diversity >20% was present in the frontal scalp of all cases of FPHL in our study ( Bhat et al, 2020 , Varma et al, 2020 ). Thin hair and single-hair follicular units were also seen.…”

Peripilar Sign in Androgenetic Alopecia: Does It Really Indicate Peripilar Infiltrate?

“…Although PPS has been frequently reported in AGA with frequencies ranging from 31% to 90% [6,[15][16][17], it has also been reported in other types of hair loss not associated with PFI such as telogen effluvium [4,[16][17][18], anagen effluvium [19] as well as in normal people [20] indicating that there must be an explanation other than PFI for PPS.…”