TLDR Hair changes could indicate neurological diseases and help monitor treatment.
The document reports on the association between hair shaft alterations and neurocutaneous diseases, specifically mentioning adrenoleukodystrophy, Steinert disease, and Alzheimer disease. Morphological and biochemical changes in the hair shaft were found in all affected patients and even in clinically unaffected family members. These findings suggest that hair shaft analysis could serve as a non-invasive clinical marker and provide insights into the pathogenesis of these diseases. Additionally, the technique could be useful for monitoring therapy, as demonstrated in studies on argininsuccinicaciduria and biotinidase defect. The document emphasizes the potential of hair shaft examination in pediatric patients due to its non-invasive nature.
September 1998 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” The document concludes that individualized treatments for hair issues are effective, certain hair changes can indicate neurocutaneous diseases, specific lotions improve skin health, laser hair removal works but needs more study on long-term effects, men's cosmetics are diverse, peeling is effective but can have side effects, and facial pigmentation is often due to overactive skin cells.
12 citations,
June 2016 in “Reviews in Endocrine and Metabolic Disorders” Some skin diseases and their treatments can negatively affect male fertility.
1 citations,
January 2022 in “Springer eBooks” 
33 citations,
November 2006 in “Survey of Ophthalmology” Madarosis is the loss of eyelashes and eyebrows due to various health issues and requires thorough examination to diagnose and treat the underlying cause.
April 2016 in “Journal of The American Academy of Dermatology” Low-cost videomicroscopy may not be reliable for diagnosing hair loss compared to standard videodermatoscopy.
