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Diagnosing PCOS in teenagers is challenging and should use strict criteria to avoid misdiagnosis and unnecessary worry.

The hedgehog signaling pathway is crucial for hair growth but not for the initial creation of hair follicles.

Opioid painkillers can cause many side effects, including breathing problems and addiction, but are generally considered safe when used properly.

Myrtle has various health benefits and potential for medicine development.

Alopecia areata is an autoimmune disease causing patchy hair loss, often with other autoimmune disorders, but its exact causes are unknown.

Postpartum depression is linked to changes in brain chemicals, inflammation, stress, and certain genes, and can potentially be identified by markers like specific steroids, serotonin levels, and vitamin D levels.

Stress can stop hair growth in mice, and treatments can reverse this effect.

The study found that Frontal Fibrosing Alopecia affects a broader age range of women and early treatment can help stop hair loss.

Stress increases nerve fibers and immune cell activity in mouse skin, possibly worsening skin conditions.

High-dose dutasteride reduces PMDD symptoms by stabilizing neurosteroid levels.

Low-oxygen conditions and ECM degradation products increase the healing abilities of perivascular stem cells.

Different hair evaluation methods have their own pros and cons, and using multiple methods together is best for accurate hair loss diagnosis and tracking.

The document concludes that hirsutism is the main sign for diagnosing hyperandrogenism, which requires a detailed patient history and physical exam.

Animal models have helped understand hair loss from alopecia areata and find new treatments.

Certain steroids in the brain affect mood and symptoms of depression, and treatments targeting these steroids show promise for improving these symptoms.

New treatments for male hypogonadism are effective and should be personalized.

The document concludes that proper diagnosis and FDA-approved treatments for different types of hair loss exist, but treatments for severe cases often fail and future improvements may focus on hair follicle stem cells.

New genes and pathways are important for testosterone production and male sexual development.

Finasteride reduces hairiness and androgen levels in women with unexplained excessive hair growth.

The FOXN1 gene is crucial for developing immune cells and preventing immune disorders.

Some breast cancer chemotherapy can cause permanent hair loss.

Neurosteroids show promise for treating epilepsy and more research is needed.

Hair sensitivity to androgens is partly controlled by specific enzyme expressions in different hair areas.

Low iron and vitamin D levels are linked to hair loss in women.

There is no clear recommendation for using selenium in cancer patients; it may be beneficial to correct low selenium levels before treatment.

Both drugs lower DHT levels, with GI198745 being more effective.

ZDHHC13 is important for normal liver function and metabolism, affecting mitochondrial activity.

Prostaglandin D₂ might be targeted for new male pattern baldness treatments.

Some women with acne have higher levels of free testosterone, which might suggest using hormonal treatments for acne.

Mutations in the LSS gene cause a rare type of hereditary hair loss.