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Chemical treatments and UV radiation severely damage the lipid layer on hair.

Trichotillomania is a chronic condition where people uncontrollably pull out their hair, often starting in childhood.

Researchers found new hair and nail genes, how hair reacts to UV, differences in white and pigmented hair growth, nerve changes in alopecia, treatments for baldness and alopecia, a toenail condition linked to a genetic disorder, and that nail fungus is more common in people with psoriasis.

Polycystic ovaries are defined by having 12 or more small follicles in each ovary and are found in up to 33% of women, while Polycystic Ovary Syndrome (PCOS) is the most common hormone disorder in women of reproductive age, potentially increasing risk of obesity, diabetes, and heart diseases.

Wait 4-5 weeks after drug use before hair testing and cut hair into three segments to confirm single drug exposure.

A woman developed male traits from accidental contact with her husband's testosterone gel.

Microneedles can cause side effects like infection and allergic reactions, and precautions like test spots and sunscreen are recommended.

Low vitamin D3 levels are significantly linked to hair loss, especially in female students.

Dogs exposed to their owners' hormone therapy developed hair loss, but symptoms resolved after stopping the therapy.

Hair analysis can show nutritional status and environmental exposure, with phosphorus being very stable in hair and differences found based on gender and conditions like depression and autism.

Mohs micrographic surgery is effective for early-stage non-melanoma skin cancers on the lips, with basal cell carcinoma more common on the upper cutaneous lip and squamous cell carcinoma more common on the lower vermilion lip.

Grasp protein helps maintain skin health after UVB exposure.

Hair loss in a child was an early sign of Crohn's disease.

Hair samples can reliably show average long-term hormone levels in young women.

Low doses of mixed chemicals cause permanent reproductive malformations in male rats.

Women with polycystic ovary syndrome tend to have a longer distance between the clitoris and anus.

1319-nm laser radiation can cause skin damage, with severity depending on exposure time and beam size.

Hair cortisol measurement is a promising, non-invasive tool for monitoring cortisol exposure over time.

UV exposure severely damages hair, making it rough and weak.

Exposure to certain sex hormones can increase health risks, while some hormone therapies may offer benefits for specific conditions.

Hair samples showed changes in chemical elements over time and location in Venezuela.

A new patch can deliver stable antibodies over time for potential HIV treatment.

Long-term effects of COVID-19 can vary over time and are more likely in certain age and gender groups, while race, income, and education levels have little to no impact. Ongoing medical care is needed due to potential complications.

Augmented reality improves vascular surgery by reducing risks and operation times.

Retinoids and narrowband UVB phototherapy are effective for treating psoriasis and can reduce treatment time when used together.

Testosterone raises blood pressure by affecting kidney function and brain gene regulation over time.

Hair straightening can damage hair and pose health risks, including exposure to carcinogens and hair loss.

Allethrin caused harmful effects and organ damage in rats, worsening with higher doses and longer exposure.

Follicular Unit Extraction (FUE) hair transplant is less invasive, leaves no scars, and has quicker recovery times, but it's more time-consuming and challenging. Automation helps speed up the process and improve graft survival, reducing the need for traditional strip surgery.

UV radiation increases protein loss from hair and reduces hair protein quality.