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In this study, researchers used a mouse model of alopecia areata to demonstrate that both ruxolitinib and baricitinib, oral JAK inhibitors, reduced hair loss, CD8+ cell infiltration, and expression of disease-related markers, with baricitinib showing greater effectiveness.

This study found that dermatological manifestations in COVID-19 patients with severe pneumonia were relatively rare, with the most frequent being the morbilliform viral exanthema and some cases of reversible androgenetic alopecia linked to disease severity.

This study found that Polyomavirus A2 infection in mice led to the development of pilomatricomas in hair follicles, with the virus replicating initially in the skin and later infecting matrix cells.

In this case report, a female patient with frontal fibrosing alopecia and lichen scleroatrophicus vulvae experienced excellent results from hair microtransplants combined with finasteride and topical minoxidil, maintained over six years.

This study observed that adherence to finasteride treatment in patients with benign prostatic hyperplasia at a clinic in Tepic Nayarit had not been previously evaluated in Mexico.

In this study, patients who were informed about finasteride's sexual side effects reported them significantly more often than those who were not, highlighting a potential nocebo effect.

This review examines hair cosmetics, including shampoos and conditioners, for their formulations and effects, but reports no new clinical findings; it emphasizes the importance of dermatologist knowledge in treating diverse hair conditions.

This review noted that alopecia areata is an autoimmune disease impacting hair follicles and offered insights into its complex pathogenesis involving immune responses, while highlighting ongoing research into new treatments such as Janus kinase inhibitors and other immunomodulatory drugs.

In this multicenter study, androgenetic alopecia was the most common type of alopecia among both men and women attending specialty hair clinics on four continents.

This review examines the pH levels of various shampoos and reports no new clinical results, highlighting the potential importance of labeling pH values on shampoo packaging for hair and scalp health.

This study found that low-level laser therapy may improve hair growth in patients with androgenetic alopecia, either as a standalone treatment or combined with minoxidil or finasteride, without reported adverse reactions.

This study found that telogen effluvium and trichodynia are common in patients after COVID-19, and their severity may be influenced by the severity of the COVID-19 infection.

This review discusses the side effects and diseases related to hairstyles and hair treatments among black women, highlighting the need for thorough examination by dermatologists, but reports no new clinical results.

This review reports no new clinical results but discusses fibrosing alopecia in a pattern distribution as a distinct scarring alopecia with characteristics of both androgenetic alopecia and lichen planopilaris.

This study reported that COVID-19 was causally associated with postinfectious hair shedding, which varied with disease severity, but hair completely recovered.

This study found that the progesterone metabolite 3α-THP increased the proliferation and gene expression of human glioblastoma cells, suggesting a role in tumor progression.

This case report is the first in Brazilian literature to document Becker nevus syndrome, featuring Becker's nevus, ipsilateral breast hypoplasia, and scoliosis in a 14-year-old girl.

In this laboratory study with rats, treatment with finasteride reduced dihydrotestosterone levels and fertility parameters, with a 30-day recovery period proving insufficient to fully restore sperm function and fertility.

This article reports a case of rapidly progressive alopecia areata totalis in a COVID-19 patient that did not respond to treatment with tofacitinib; no new clinical results are discussed.

This Viewpoint discusses the utility of dermoscope in routine practice and how familiarity with dynamic vs static trichoscopy may address its limitations, but it reports no new clinical findings.

This case report suggests that identifying hyperpigmentation on the upper eyelid with specific dermoscopy patterns could help diagnose facial lichen planus pigmentosus without needing a facial biopsy.

This study examined severe skin reactions, including erythema and eczema-like lesions, associated with Brazilian keratin treatment, suggesting a drug reaction phenomenon rather than solely irritant or allergic origin.

This study reported that fibrosing alopecia in a pattern distribution can occur in patients of color, with clinical and histopathological features allowing for an accurate differential diagnosis.

This study suggests that the progesterone metabolite allopregnanolone and progesterone regulate distinct gene sets involved in glioblastoma cell proliferation, with some overlapping effects modified by finasteride.

This case report discusses cutaneous graft versus host disease presenting as fibrosing alopecia, suggesting a mechanistic model for understanding cicatricial pattern hair loss.

This article reviews the historical development of trichology and proposes the term "trichiatrist" for physicians specializing in the medical treatment of hair and scalp, noting no new clinical findings.

This review discusses the complex causes of trichodynia and reports no clinical results; the authors call for more research into neural and immune interactions in scalp conditions.

This article reviews the pros and cons of co-washing for hair cleansing and presents no new clinical results; the authors describe potential residue buildup as a drawback.

This letter to the editor discusses the controversy surrounding the use of anti-androgen therapy for COVID-19 without providing new clinical evidence, and calls for caution in making extraordinary claims.