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The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

The article explains the genetic causes and symptoms of various hair disorders and highlights the need for more research to find treatments.

Hair analysis for drugs needs a better understanding of how drugs enter hair, considering factors like hair structure and pigmentation.

The LRRK2-G2019S mutation in Parkinson's disease has a lifetime penetrance of 25-35%, and finasteride may help reduce symptoms in adult male Tourette syndrome patients.

Finasteride reduces Tourette syndrome symptoms, but results may be limited due to potential biases.

Manatee whiskers are specially adapted for touch in water.

Finasteride may help reduce symptoms in male Tourette syndrome patients.

The document describes a woman with familial Parkinson's disease due to a genetic mutation, showing severe symptoms and poor response to treatment, and suggests finasteride may help reduce symptoms in Tourette syndrome.

Finasteride significantly reduced tics and obsessive-compulsive symptoms in patients with Tourette syndrome.

THAP1 gene changes do not affect DYT1 dystonia; finasteride may help reduce tics and OCD in Tourette syndrome.

A specific gene mutation is linked to a hereditary form of dystonia that responds well to certain medications.

Finasteride significantly reduced tics and obsessive-compulsive symptoms in Tourette syndrome patients.

Finasteride may help reduce tic severity in male Tourette syndrome patients.

Iron deficiency might contribute to hair loss in women.

A woman's unique dementia was misdiagnosed, a genetic mutation increases Parkinson's risk with age, and finasteride may help with Tourette syndrome.

Geriatric Julia Creek dunnarts often suffer from reproductive and skin diseases, impacting conservation efforts.

Researchers made a mouse model with curly hair and hair loss by editing a gene.

Neurotoxins can affect neurotransmitter release and have potential in treating muscle, pain, and cancer conditions, but more research is needed on how they work.

Shrunken heads retain some facial features and hair characteristics, allowing for limited individual identification.

Dyeing hair can help target and destroy hair follicles selectively.

Grafted rodent and human cells can regenerate hair follicles, but efficiency decreases with age.

Zolpidem shows up in hair from the top back of the head after one dose and fades over time, suggesting it gets into hair through blood and sweat.

Forensic hair analysis for drugs is now more reliable and accurate.

Some cancer and immune system drugs can cause serious side effects, including heart, lung, nerve, and organ damage, which need careful monitoring and management.

Dyes can penetrate human skin and hair follicles up to 1.2 mm deep and the sebaceous gland can store dye; Indocyanine Green lotion was made for safe dyeing and monitoring.

COVID-19 may harm male reproductive health and lower testosterone levels, potentially affecting fertility and causing erectile dysfunction. More research is needed.

IL-33 is linked to hair follicle damage in psoriasis and could be a treatment target for hair loss in this condition.

Human enzymes can detoxify harmful substances but might also increase their cancer risk.

Different species and human skin models vary in their skin enzyme activities, with pig skin and some models closely matching human skin, useful for safety assessments and understanding the skin's protective roles.

Rare ULBP3 gene changes may raise the risk of Alopecia areata, a certain FAS gene deletion could cause a dysfunctional protein in an immune disorder, and having one copy of a specific genetic deletion is okay, but two copies cause sickle cell disease.