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Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

Anticonvulsant drugs may cause temporary chromosomal abnormalities.

Teriflunomide is an effective and safe first-line oral treatment for relapsing multiple sclerosis.

Bioluminescence imaging can track hair follicle cells and help study hair regrowth.

Finasteride may help prevent chronic bacterial prostatitis, with better results when combined with antibiotics.

Dermatologists are crucial for managing skin side effects in metastatic melanoma patients using vemurafenib and ipilimumab.

Targeted therapies for lung cancer are effective but require careful management of side effects to benefit patients.

The document concludes that pig iPSCs show promise for transplant therapies and the field is advancing in controlling cell behavior for biology and medicine.

The document suggests that hair loss after stopping birth control may be similar to post-pregnancy hair loss and could recur with future pregnancies.

Dietary supplements might help prevent post-COVID hair loss, but serum ferritin is not a reliable indicator.

Telogen Effluvium is a common, usually reversible hair loss condition, often improved by removing the trigger and possibly treated with various products, though their effectiveness is uncertain.

Hair loss can be linked to hormonal changes, and physical conditions like heart defects can cause depression.

Hair loss caused by genetics and hormones; more research needed for treatments.

Hidradenitis suppurativa, a chronic skin disease, can be managed with antibiotics, lifestyle changes, and in severe cases, surgery. Early diagnosis and careful planning are key, and laser treatment can be an efficient solution for mild to severe cases.

Latanoprost can make eyelashes longer, thicker, and darker.

Transplant success has improved with better immunosuppressive drugs and donor matching.

Sonic hedgehog signaling is crucial for hair growth and maintaining hair follicle identity.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

MIM is crucial for hair follicle formation and regeneration by controlling cilia formation and hedgehog signaling through its interaction with Cortactin and Src.

JAK inhibitors help with skin conditions but need more research on dosing and safety.

Flutamide rarely causes liver toxicity in prostate cancer patients.

Tiny particles from stem cells help activate hair growth cells and encourage hair growth in mice without being toxic.

Manipulating the catagen and telogen phases of hair growth could lead to treatments for hair disorders.

The Wnt/β-catenin pathway helps tissue regeneration but can also cause fibrosis, and drugs that inhibit this pathway may aid in healing skin and heart tissues.

Thuja orientalis hot water extract may help hair grow by starting the growth phase and improving hair follicle development.

IGF-1 injections help mice grow more hair by increasing cell growth and blocking a hair growth inhibitor.

PRP injections effectively treat hair loss, with positive results in both monthly and every three months treatments.

Sorafenib helps some advanced cancers alone or with other treatments, but not all, and research continues to improve its use.

Some natural compounds can protect fish ear cells from damage by certain antibiotics without affecting the antibiotics' ability to fight infections.

The document concludes that correct diagnosis and management of PCOS are important, and more research is needed on its risks and treatments.