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This case report highlights that Sheehan's syndrome can still occur in developed countries due to factors like migration and delayed diagnosis, with diabetes insipidus sometimes masked by adrenal insufficiency.

This study developed a support vector machine model using trichoscopic patterns to accurately classify androgenic alopecia severity, with an accuracy of 94.3% in training and 90.0% in test datasets.

In this study, no significant association was found between the severity of androgenetic alopecia in males and trichoscopy features such as hair diameter diversity, vellus hair, and white dots, suggesting that trichoscopy may not predict alopecia severity based on the Hamilton–Norwood scale.

This study found that both trichoscopy and folliscopy are highly accurate for diagnosing telogen effluvium, but trichoscopy is easier and quicker to perform.

This study found a significant association between COVID-19 hospitalizations and acute telogen effluvium in Egyptian women, emphasizing the importance of considering recent COVID-19 infections when evaluating hair loss in this population.

This study found that patients with COVID-19 infection lasting longer than two weeks experienced more severe post-infection hair loss, with women and older individuals particularly affected.

This case report identifies a 23-year-old man with congenital triangular alopecia, a non-scarring alopecia characterized by preserved follicles and vellus hair, for which unnecessary interventions should be avoided.

This study observed that Egyptian women with a history of COVID-19 infection frequently experienced telogen effluvium, indicating the importance of considering COVID-19 history in patients presenting with hair loss.

This study found that both trichoscopy and folliscopy are highly accurate for diagnosing telogen effluvium, though trichoscopy is simpler and faster to perform.

This study found that among women with hirsutism, the most common type of non-scarring hair loss observed was androgenetic alopecia with telogen effluvium.

This study found that among women with hirsutism, the most common type of non-scarring alopecia observed was androgenetic alopecia with telogen effluvium.

This study found that trichoscopy is a valuable diagnostic tool for identifying hair loss patterns in women and can help avoid scalp biopsies in unclear cases.

This study found that, among 100 patients with alopecia areata, the most prevalent subtype was patchy alopecia areata, with characteristic trichoscopic features including black dots, yellow dots, and empty hair follicles.

In this study, researchers evaluated trichoscopy in diagnosing non-scarring alopecia and found diagnostic value in observing diverse hair diameters in androgenetic alopecia, black dots and broken hairs in alopecia areata, and empty follicles in telogen effluvium, supporting trichoscopy's utility in differentiating alopecia types.

This study developed new graded visual scales integrating macroscopic and trichoscopic images for assessing the severity of androgenetic alopecia in men and women, potentially aiding in more objective disease evaluation.

This study identified specific trichoscopic features in patients with androgenetic alopecia and telogen effluvium, highlighting differences in hair shaft diameter variation between fronto-temporal and occipital areas.

This study observed that trichoscopic patterns, such as yellow dots and honey comb patterns, correlate with the severity of androgenetic alopecia in Indian patients, highlighting trichoscopy's diagnostic and prognostic value.

Pili annulati is caused by a protein metabolism disorder affecting hair structure.

This study observed that vellus hairs and empty spaces are present in prepubertal children's scalps, but they likely do not indicate androgenetic alopecia, suggesting a natural 'true resting' phase of scalp hair.

This study found that the presence of CD3(+) T-cells within empty follicular fibrous tracts is a reliable indicator for diagnosing diffuse alopecia areata instead of pattern hair loss.

This study suggests that the presence of vellus hairs and empty spaces in prepubertal scalps may reflect a natural resting phase of hair growth rather than indicating early androgenetic alopecia.

This study found that microencapsulated human hair dermal papilla cells successfully induced hair follicle regeneration on the dorsal skin of nude mice, unlike control groups with free cells or empty microcapsules.

In an animal study, researchers observed that a Chromolaena odorata layered-nitrile rubber transdermal patch significantly improved wound contraction, protein, hexosamine, and uronic acid levels, and collagen deposition in healing excision wounds in rats compared to a control group with an empty patch.

This study describes the kenogen phase, where hair follicles rest after shedding, and finds its duration and frequency are greater in individuals with androgenetic alopecia, potentially contributing to baldness.

This study suggests that an increase in kenogen phases, along with rising vellus hair cycles and fewer normal hair cycles, is associated with the progression of female androgenetic alopecia.

This study found that obesity in women may impair endometrial stromal function and contribute to reproductive complications, possibly due to metabolic influences rather than immune cell differences.

This study reports that telogen effluvium, a type of hair thinning, commonly follows SARS-CoV-2 infection after 1 to 3 months, possibly due to stress, inflammation, or direct viral impact on hair follicles.

This study found that the controlled release of specific growth factors from biodegradable hydrogels significantly enhanced hair follicle growth and hair shaft length in mice compared to growth factors in solution.

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Reflectance confocal microscopy can tell apart white dots on the scalp as either sweat gland ducts or hair follicle openings.