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Many new moms lose hair after childbirth due to hormonal changes, but it usually grows back within a year.

This review explores the connection between COVID-19 infection and telogen effluvium, highlighting the potential contribution of inflammatory and emotional factors to hair loss; it reports no clinical results.

This article is a case report on severe hair loss due to telogen effluvium occurring during inpatient rehabilitation and does not provide new clinical results.

Telogen effluvium is a common hair loss condition where many hairs enter the resting phase, often not noticeable until significant loss occurs, and treatment focuses on the underlying cause.

Hair loss can be linked to hormonal changes, and physical conditions like heart defects can cause depression.

This study reported that deleting the MED1 subunit from the MED complex in keratinocytes resulted in disrupted hair differentiation and cycling, leading to hair loss in mice.

This article discusses potential roles for retinoids in hair regrowth and proposes future studies, reporting no new experimental results.

This review discusses the structure, functions, and growth cycle of human hair, emphasizing its reduced growth and protective roles, and reports no new research findings.

This report presents four cases highlighting diagnostic challenges between specific types of alopecia, comparing their clinical and histopathologic features without providing new research findings.

The document says that there are treatments for hair and nail diseases.

This study used single-cell RNA sequencing to analyze 26,573 cells from the scapular skin of yaks, identifying 11 major cell types and providing insights into the diversity and morphogenesis of hair follicle cell types through detailed maps of DP cells and dermal fibroblasts.

This diagnostic discussion reports that diffuse alopecia areata was identified in a patient with diffuse hair loss, based on specific histopathological features observed in a biopsy.

This review discusses capillary aging and its phases, and emphasizes the dermatologist's role in diagnosing hair aging accurately, but reports no new clinical results.

This review discusses telogen effluvium, including its triggers, clinical presentations, and management options, and does not report new research findings, emphasizing the need for identification and exclusion of underlying causes.

The document explains how hair is studied in forensics to identify its source and its role in criminal investigations.

This study found that the expression levels of Siah1 and Siah2 in mice skin vary dynamically during postnatal hair follicle development, suggesting their specific roles in modulating the HIF pathway.

This article reviews the diagnosis and causes of different types of alopecia, presenting no new clinical findings.

St. John’s wort changes how finasteride works in the body, possibly affecting its effectiveness.

This study found that permanent waving treatment partially disrupts the α-helical structure in human hair microfibrils, primarily during the initial reduction phase, rather than just affecting disulphide bonds.

This study suggests that diffuse alopecia areata initially involves an intense inflammatory attack during the anagen phase, progressing through different hair cycle stages with specific shedding patterns.

This study found that hair damage from sunlight and chemical processes like perms and bleaching varies in internal microstructure changes, suggesting that protective techniques should be tailored to the type of chemical treatment used.

This study suggests that new cells are incorporated into the dermal papilla during the early anagen phase of the hair cycle, which may influence hair growth consistency and follicle size changes.

This study observed that the growth cycle of cashmere in Inner Mongolian cashmere goats consists of three phases, with genes KAP3–1, KRTAP 8–1, and KRTAP 24–1 closely correlating with this cycle.

In this phase 2a study of adults with alopecia areata, researchers observed that ritlecitinib treatment did not result in significant differences in brainstem auditory evoked potential changes or axonal swelling compared to placebo, suggesting the dog toxicity findings may not be clinically relevant in humans.

This study suggests that D2O increases hair length in nude mice by extending the hair cycle duration, particularly the hair-existing phase, which is associated with increased mast cell density.

This study found that the BMP antagonist noggin induces hair growth in postnatal skin by neutralizing BMP4's inhibitory activity, potentially mediated by changes in Shh expression.

This study found that ritlecitinib improved patient-reported outcomes related to hair growth in individuals with alopecia areata, with some experiencing clinically meaningful hair regrowth, although changes in emotional symptoms and activity limitations were minimal and similar across treatment groups.

In this study, the researchers found that KAP3.1, KRTAP 8-1, and KRTAP 24-1 genes positively correlated with the growth cycle of cashmere in Inner Mongolia goats, aligning with the observed hair cycle phases.

In this study, researchers used advanced four-dimensional optical imaging techniques to observe changes in skin afflicted with acne, finding increased epidermal thickness, keratinized hair follicles, inflammation, and aggregated blood flow, helping to distinguish between inflammation and reparative phases of acne progression.

This study found that PRP injections are safe and may slightly reduce penile curvature and improve PDQ scores in men with stable-phase Peyronie's Disease, but the changes are not significant enough to predict long-term effects.