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Light can turn on hair growth cells through a nerve path starting in the eyes.

Dermatologists play a key role in treating skin symptoms of PCOS like dark patches, excess hair, acne, and hair loss.

The document concludes that recognizing and properly diagnosing lipodystrophy syndromes is crucial for effective management and treatment.

Wounds on the face usually heal with scars, but understanding how some wounds heal without scars could lead to better treatments.

Face-lifts can lead to complications like bleeding, nerve injury, skin death, hair loss, and rare infections, with careful surgery reducing risks.

Hormone imbalances can cause specific skin changes, which may help in early detection of endocrine disorders.

The conclusion is that accurately identifying the cause of high androgen levels in women with PCOS is crucial and requires specific tests.

In Brazil in 2018, the most common skin issues were acne, photoaging, and nonmelanoma skin cancer, with treatments often including topical medications and sunscreen.

Spironolactone is better than placebo for reducing excessive hair growth in women, but its effectiveness for acne is unclear due to small study sizes.

FGF9 controls which receptors it binds to through a process where two FGF9 molecules join, and changes in FGF9 can lead to incorrect receptor activation.

Researchers developed a reliable method to measure testosterone and epitestosterone in urine for medical and anti-doping use.

Neurosteroids can influence behavior by modulating brain inhibition, with potential for treating psychiatric disorders.

Mice lacking steroid 5α-reductase 2 show less aggression and better impulse control.

Oncogenic K-ras causes rapid cancerous changes in the mouth's lining.

Using polymeric micelles to deliver spironolactone topically could improve wound healing in skin affected by glucocorticoids.

Neck lift surgery can lead to complications like hematoma, nerve injury, and skin issues, with various treatments available for each.

Chicken feather gene mutation helps understand human hair disorders.

Injecting cosyntropin into grizzly bears increases blood cortisol but doesn't change hair cortisol levels.

Secondary amenorrhea has many causes and requires thorough evaluation to treat and restore menstrual cycles.

A woman with anorexia and Cushing's syndrome improved after tumor removal, highlighting the need to consider hormonal issues in psychiatric conditions.

Belimumab effectively controls SLE disease activity and reduces steroid use.

Different human traits like skin color and hair type vary between populations due to genetic adaptations to the environment.

Some supplements and hormones can increase hair loss by raising DHT levels.

The document explains hair and nail biology, common hair loss conditions and treatments, oral and genital skin diseases, and the risks and treatments associated with squamous cell carcinoma.

Adult female acne is a complex condition that can worsen with menopause, requiring holistic treatment and tailored skincare at different life stages.

High levels of cortisol in hair show long-term stress which can lower fertility in animals.

New treatments and diagnostic methods for various animal skin conditions showed promising results.

The document is a detailed medical reference on skin and genetic disorders.

Facelift surgery has evolved to focus on natural results and safety, with patient selection and postoperative care being key to success.

The document concludes that early diagnosis and treatment of PCOS in teenagers is important for managing symptoms and preventing long-term health problems.