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This case report details a unique instance of pityriasis rubra pilaris affecting only the scalp, highlighting novel trichoscopic features and emphasizing the importance of recognizing this rare presentation for improved diagnosis and treatment.

Stress during pregnancy can thin fetal skin.

In this study, researchers found that the shape of polygonal domains, such as squares and triangles, significantly impacts Turing pattern formation, with domain geometry affecting the stability and type of bifurcations observed in simulations.

This study successfully cultured human fetal hair follicle-derived melanocytes, which showed high proliferative capabilities and unique morphological characteristics compared to adult-derived cells, potentially advancing hair disease research.

This case study presents a 9-month-old male infant with symptoms suggesting a likely diagnosis of Hay–Wells syndrome, including severe scalp crusting, nail abnormalities, and partial syndactyly.

Pubic hair transplantation can help women with little to no pubic hair, using scalp hair for a natural look and requires careful aftercare.

This study observed that amelanotic melanocytes from human hair follicles appeared morphologically immature, suggesting they might not transfer melanosomes into keratinocytes.

Most older adults experience pattern hair loss due to shrinking hair follicles, with men and women showing different balding patterns.

This study observed that men with frontal and moderate vertex baldness between ages 40 and 50 had a higher risk of aggressive prostate cancer, suggesting a potential link between baldness pattern and cancer risk.

This article presents case reports of three women with hair thinning primarily on the top of the head, suggesting a pattern consistent with female-type androgenetic alopecia, though this is not diagnostic.

This study found that older men with vertex balding have lower circulating levels of the protein IGFBP-3 and higher levels of IGF-1.

This study found that older men with vertex balding had lower levels of IGFBP-3 and higher levels of IGF-1 in their plasma.

This study found that androgenetic alopecia was the most common cause of frontal hairline recession in Egyptian female patients, supporting the use of trichoscopy as a noninvasive diagnostic tool.

Hair loss in women often doesn't follow a pattern, isn't linked to age, may be genetic, and can be related to thyroid issues or other health factors.

Some men can have female pattern baldness without hormonal abnormalities or signs of feminization.

This study suggests that dividing the face into thirds may guide hairline development during follicular transplantation for men with type III-V male pattern baldness.

This study suggests that observing the acute telogen effluvium triad—frontal fringe, temporal recess, and occipital fringe—can aid in diagnosing telogen effluvium during resolution phases, despite challenges like negative pull tests.

This study found that certain male pattern baldness subtypes at age 45 are associated with an increased risk of developing colorectal neoplasia.

The document concludes that early diagnosis is key for treating common baldness in women, but reassurance is often the best approach as hair thinning can be a normal part of aging.

This study suggests a potential link between early-onset baldness before age 30 and increased risk for coronary artery disease, warranting consideration in epidemiological research.

This case study suggests that trichoscopic examination of the beard can aid in diagnosing frontal fibrosing alopecia in men, especially when challenging to differentiate from androgenetic alopecia.

Sparse hairs below frontal hairline can indicate early male balding.

This case study describes a 43-year-old Hispanic man with cicatricial alopecia of the scalp, and suggests tufted folliculitis as the most likely diagnosis.

This study characterized the incidence of hair loss patterns among men of different races, highlighting a lack of direct racial comparisons in previous research.

This study found decreased hair density and altered follicular architecture in the balding frontal scalp of patients with androgenic alopecia, with increased vellus hairs noted.

This report presents a case of an 18-year-old female-to-male transgender man experiencing hair loss and varied hair lengths over his temples, raising questions about the diagnosis as the patient exhibited no itching or rash.

This study reported that two male patients with diffuse unpatterned alopecia exhibited donor-area involvement in both the vertex and occiput, challenging the assumption of occipital stability for hair transplantation, and showed partial improvement following treatment with oral finasteride and topical minoxidil.