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This chapter reviews the basic physiology and causal mechanisms of hair follicle disorders, but it reports no new clinical results.

In laboratory tests and mouse models, this study found that the novel IPC analog SIG-1451 may offer potent anti-inflammatory effects for treating allergic skin inflammation, potentially outperforming some current therapies in specific inflammatory phases.

In this study, the novel isoprenylcysteine analog SIG-1451 was shown to inhibit pro-inflammatory cytokine release in various cell-based assays relevant to allergic dermatitis, acting on targets such as IL-4 and IL-6 with potential anti-inflammatory benefits.

PRP is a safe natural treatment that improves skin by reducing wrinkles and enhancing texture for up to 4 months.

This study found that Wnt signaling in the hair follicle is crucial for coordinating the behavior of epithelial and melanocyte stem cells, which drives hair regeneration and melanocyte differentiation in mice.

This review examines the role of steroidal inhibitors in treating prostatic diseases but presents no new clinical results.

This study found that the cyanoacrylate biopsy method could effectively evaluate drug distribution in hair follicles, suggesting its potential utility for assessing topically applied chemicals targeting hair follicles.

The document concludes that doctors should monitor children's brain development when treating hemangiomas with interferon alfa and consider stopping the treatment if problems arise, while also exploring drugs that might counteract side effects.

In this study, baricitinib treatment led to significant regrowth of scalp, eyebrow, and eyelash hair in alopecia areata patients compared to placebo, with higher effectiveness seen at the 4-mg dose.

This study found that the overall incidence rate of alopecia among female active component service members in the U.S. military from 2010 to 2022 was 804.4 per 100,000 person-years, with Non-Hispanic Black and Hispanic women experiencing the highest rates.

This case report describes a 19-year-old female with systemic lupus erythematosus who exhibited eyelash trichomegaly, a rare disorder involving changes in eyelash characteristics, alongside diffuse alopecia.

This study found that the peach gene CTG134, involved in auxin-ethylene interactions, plays a role in hormonal regulation during root hair formation in Arabidopsis and tobacco.

This study suggests that radiation-induced changes in FGF18 gene expression in the skin may predict later reductions in bone mass, as observed in irradiated mice.

This study examined the expression of fatty acid transporters and binding proteins in mouse sebaceous glands and found that CD36 did not affect the localization of other related molecules.

In this study, researchers found that alkylating chemotherapy causes hair follicle stem cells to lose their regenerative ability by initially triggering proliferation followed by apoptosis, leading to permanent regeneration loss.

This study found that health-related quality of life was significantly lower in women with polycystic ovary syndrome, especially those with the anovulatory phenotype, compared to non-PCOS controls attending a tertiary hospital.

This study discovered that the gene Tfap2b identifies a melanocyte stem cell population in zebrafish, essential for regenerating melanocytes with multi-fate potential into adult pigment cells.

This study found that Oncostatin M, via JAK-STAT5 signaling, keeps hair follicle stem cells inactive, and its removal leads to hair growth initiation in mice.

This study found that dermal fibroblast cultures, especially those with higher alpha-smooth muscle actin expression, can be used to produce skin-derived precursor cells, unlike human hair follicle dermal papilla cultures.

This review explores recent findings on the roles of melanocyte and melanocyte stem cells in the hair follicle, highlighting their importance for skin health and potential applications in regenerative medicine, but reports no new clinical results.

This study found that the combination of letrozole and quercetin loaded in spanlastics showed enhanced cytotoxicity and other anticancer effects against MCF-7 breast cancer cells compared to individual treatments.

This review discusses the potential of 4-azasteroids as 5α-reductase inhibitors for treating hirsutism, reporting their promising effects in animal studies but noting no clinical trials have been conducted yet.

This study reported that patients with alopecia areata have reduced expression of the melanocortin receptor MC2R in their scalp tissues compared to normal scalp, indicating potential involvement in the condition's pathophysiology.

This article reviews the effects of 5 alpha-reductase inhibitors for treating conditions like male pattern baldness and benign prostatic hyperplasia, noting significant DHT reduction but reports no new clinical results.

This review discusses inherited forms of vitamin D-dependent rickets and explains their genetic and metabolic causes but reports no new clinical findings.

In this study, researchers found that caffeine can counteract stress-induced damage in ex vivo human androgenetic alopecia hair follicles, suggesting it may help prevent stress-related hair loss.

In this study, oral contraceptive use in women with PCOS increased the expression of certain inflammatory gene markers, which were positively associated with metabolic abnormalities.

This study found that the ACTH/MC2R system is important for hair cycle regulation, with deficiencies in MC2R leading to altered hair growth phases in mice.

This review discusses the role of melanocyte stem cells in skin pigmentation and potential regenerative therapies, but reports no new clinical results.

This study found that treating human skin explants with TPA increased the number of certain melanocyte phenotypes in the interfollicular epidermis, suggesting that this ex vivo model can effectively replicate human skin's pharmacologic responses for studying potential treatments.