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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.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

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

Human skin can make serotonin and melatonin.

The document concludes that the fast-growing direct-to-consumer genetic testing market lacks sufficient regulation, posing risks to consumers due to questionable test quality and accuracy.

Low iron and L-lysine levels can cause hair loss in women, and increasing these nutrients can reduce hair shedding.

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.

AGA causes hair loss by shrinking hair follicles due to DHT binding, and can be treated with finasteride and minoxidil.

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.

Estrogens can improve skin aging but carry risks; more research is needed on safer treatments.

Men are more likely to have severe COVID-19 cases and fatalities than women due to factors like lifestyle, aging, and biological differences.

A man with severe hair loss and skin disease regrew his hair with no side effects after taking tofacitinib.

Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.

Alopecia areata is an autoimmune condition causing hair loss due to the immune system attacking hair follicles, often influenced by genetics and stress.

Some medicinal plants can help heal wounds and may lead to new treatments.

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

Hair follicle stem cells are key for hair and skin regeneration, can be reprogrammed, and have potential therapeutic uses, but also carry a risk of cancer.

Certain inhibitors slow down plant growth by causing early cell specialization without changing the cell development pattern.

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

Vitamin D and its receptor regulate skin functions like cell growth, immunity, hair cycle, and tumor prevention.

Tight junctions are key for skin protection and controlling what gets absorbed or passes through the skin.

Different types of stem cells in hair follicles play unique roles in wound healing and hair growth, with some stem cells not originating from existing hair follicles but from non-hair follicle cells. WNT signaling and the Lhx2 factor are key in creating new hair follicles.

The document concludes that more research is needed to better understand and treat primary cicatricial alopecias, and suggests a possible reclassification based on molecular pathways.

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

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

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.

Some viruses can cause cancer by changing cell processes and avoiding the immune system; vaccines and targeted treatments help reduce these cancers.

Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.

Vitamin D is important for skin health and may affect conditions like psoriasis and hair loss, but more research is needed to understand its role fully.

Masculine facial features may not reliably indicate heritable health, and more research is needed.