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The document explains different hair and scalp conditions, including common hair loss after pregnancy or illness, drug-induced hair loss, hereditary excessive hair growth, patterned baldness, autoimmune hair loss, and permanent loss due to skin disease, with generally limited treatment options.

Azathioprine can cause hair loss and matted hair.

The exact identity of skin stem cells and how skin cells differentiate is not fully known.

Proretinal nanoparticles are a safe and effective way to deliver retinal to the skin.

Skin and hair renewal is maintained by both fast and slow cycling stem cells, with hair regrowth primarily driven by specific stem cells in the hair follicle bulge. These cells can also help heal wounds and potentially treat hair loss.

Using 448-kHz Capacitive-Resistive Electrothermal Therapy can help increase hair density and prevent hair loss in women.

Dermal stem cells help regenerate hair follicles and heal skin wounds.

The document concludes that better targeted treatments are needed for wound healing, and single-cell technologies may improve cell-based therapies.

Skin stem cells are crucial for maintaining and repairing the skin and hair, using a complex mix of signals to do so.

The document concludes that skin stem cells are important for hair growth and wound healing, and could be used in regenerative medicine.

Hair growth is cyclic and influenced mainly by local factors.

Keratins help protect cells, aid in cancer diagnosis, and influence cancer behavior and treatment.

Stem cell niches are crucial for regulating stem cell behavior and tissue health, and their decline can impact aging and cancer.

Hair regeneration needs dynamic cell behavior and mesenchyme presence for stem cell activation.

Lichen Planus is a less common condition affecting skin and mucous membranes, with various types and associated risk factors, challenging to diagnose, significantly impacts life quality, and may have a risk of cancerous changes in oral lesions.

Teriflunomide helps reduce multiple sclerosis symptoms and is safe for most patients.

Insulin resistance is a key factor in polycystic ovary syndrome, but genetics may also contribute.

Pregnancy can cause various skin changes and diseases, with PUPPP being the most common skin condition specific to pregnancy.

Alopecia areata involves immune activation in the scalp, suggesting treatments targeting TH1, TH2, and IL-23 pathways.

Zinc is effective for treating various skin conditions, including warts and acne.

Stem cell niches support, regulate, and coordinate stem cell functions.

Latanoprost can make eyelashes longer, thicker, and darker.

Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.

Androgens can cause hair growth in some areas and hair loss on the scalp.

Laser device increases hair density, safe for treating hair loss in men and women.

Cathepsin L is essential for normal hair growth and development.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

Different types of stem cells and their environments are key to skin repair and maintenance.

The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.