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This report describes a case in which intramuscular cyanocobalamin treatment reversed skin and nail pigmentation changes and premature gray hair caused by vitamin B12 deficiency due to pernicious anemia.

In this study, dermoscopic examination of COVID-19 patients revealed significant microvascular changes in the proximal nailfold, such as avascular areas and disorganized capillary architecture, compared to healthy controls, with some regression of these changes observed over time.

This study reported cases of post-COVID-19 telogen effluvium in patients who also exhibited distinctive red band changes in their nails.

This review by the British Hair and Nail Society reported that their national grand round for complex hair disorders has led to diagnosis changes in 38% of cases and has suggested novel treatments, emphasizing its role in aiding complex diagnostic and therapeutic decisions.

This article reviews nail involvement in various skin diseases, such as psoriasis and lichen planus, and highlights characteristic changes but reports no new clinical findings.

The document reviews various hair and nail disorders, their causes, and treatments, emphasizing the need for proper diagnosis and the link between nail changes and systemic diseases.

In this study, Brazilian postmenopausal women reported that menopause significantly deteriorates the quality of their skin, nails, and hair, negatively affecting self-esteem and quality of life, with a need for better understanding of hormone replacement therapy's dermatological effects.

Older adults commonly experience wrinkles, itchy skin, psoriasis, fungal infections, skin growths, grey hair, hair loss, and nail ridging, but no skin cancer was found in this group.

This study found that dietary supplementation with collagen, chondroitin sulfate, low-molecular weight hyaluronic acid, Pycnogenol®, and coenzyme Q10 significantly improved skin hydration, elasticity, nail hardness, and hair condition in patients with age-related dermatological changes after 12 weeks.

This study observed that common skin changes in patients with type 2 diabetes included peripheral hair loss, xerosis, anhydrosis, and nail alterations, underscoring the importance of controlling blood sugar and foot care to prevent neuropathy complications.

The document concludes that skin and nail changes can indicate various underlying health conditions.

This report describes a case of a man developing hair changes, including Beau's lines and Pohl-Pinkus constrictions, following ABVD chemotherapy.

This review discusses how hair and nail manifestations can indicate systemic diseases, emphasizing the importance of these appendageal clues in physical diagnosis, but reports no new findings.

This systematic review found that estrogen deficiency in postmenopausal women leads to structural and symptomatic changes in genital and cutaneous tissues, with local estrogen therapy providing short-term benefits, while evidence for device-based treatments remains limited and requires larger trials.

In this case series, Xiang Chen reported instances of nail damage and hair loss following herpes zoster, noting the need for further exploration into the mechanisms and potential risk factors such as tuberculosis infection and kidney transplantation.

This article reviews common skin eruptions in chemotherapy patients and discusses how recognizing these patterns can help avoid unnecessary changes to cancer treatment; it reports no new clinical results.

This review discusses common hair and nail diseases in the elderly and reports no new clinical results, noting their significant impact on quality of life.

This review discusses recent advances in understanding the cellular, molecular, and genetic factors contributing to lupus erythematosus and reports no new experimental findings.

This case report describes a 23-year-old male patient with nail discoloration that may be associated with COVID-19, suggesting possible microvascular damage.

This case report highlights a 12-year-old boy with twenty nail dystrophy in isolation, emphasizing the need for thorough physical exams to distinguish nail disorders and provide appropriate management and counseling on the condition's benign nature and good prognosis.

In this study, researchers at the Hospital Militar Universitario “Dr. Carlos Arvelo” found that among children under five with severe malnutrition, skin pigmentation changes and extreme thinness were the most common signs.

This observational study involving 120 cancer patients undergoing chemotherapy found that hair, skin, and nail changes were common side effects, with xerosis and hyperpigmentation being the most frequently observed skin conditions.

This report describes a rare case of hair and nail ectodermal dysplasia in a 3-year-old girl, where treatment with topical minoxidil resulted in minimal improvement after 12 months.

This study found that during the early pandemic months of 2020, there was a significant increase in dermatological conditions linked to stress and behavioral changes compared to the same period in 2019.

In this study of alopecia areata patients, researchers reported that nail changes are significantly associated with severe disease, and dermoscopic analysis revealed a notable correlation between yellow dots and increased disease severity, with the condition primarily affecting young adults and more common in males.

In this study, the HairCheck device was reported to accurately assess changes in hair density and diameter, suggesting its usefulness in monitoring alopecia progression and treatment response.

This review discusses the physiological skin changes during pregnancy and reports no new clinical results, emphasizing the importance of distinguishing these changes from pathological conditions.

HIV can cause various nail and hair disorders, important for early diagnosis and treatment.

Tofacitinib citrate improved nail dystrophy and pain in patients with alopecia universalis without causing side effects.

This article discusses skin changes during pregnancy and emphasizes the importance of recognizing these physiological manifestations to prevent unnecessary tests and stress for pregnant patients; it reports no new study findings.