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Acne is the most common skin problem in Brazil, with a need for improved dermatological care and health education, especially for the public sector and black-skinned individuals.

Primary health care in Florianópolis mostly treated simple skin conditions, while secondary care handled more complex skin diseases.

A woman's health issues were caused by arsenic poisoning from kelp supplements.

Skin diseases significantly lower the quality of life for patients in southern Brazil, especially for younger, single, and lower-income individuals.

Dermoscopy is useful for diagnosing various skin, hair, and nail disorders and can reduce the need for biopsies.

HIV patients with lower CD4 T cell counts often have more skin problems.

Most HIV patients in the study showed skin and mucous membrane issues, with oral thrush being the most common.

Melatonin directly affects mouse hair follicles and may influence hair growth.

The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.

The study found increased skin pigmentation and variable melanocyte density in a patient with Addison's disease.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.

Most skin changes during pregnancy are harmless and moles don't significantly change, but many women experience pigmentation changes due to hormones and sun exposure.

The document concludes that understanding nail anatomy is key for diagnosing nail diseases, early signs of nail melanoma may allow for less aggressive treatment, and specific genetic mutations are important in thyroid cancer prognosis and treatment.

Becker's Melanosis and Hypertrichosis mainly affects young males, causing brown skin patches and extra hair on one side of the upper body.

The document concludes that while white skin, nail, and mucosa diseases increase skin cancer risk, they are generally harmless, especially compared to darker pigmentation conditions.

The created skin model with melanoblasts improves the study of skin color and offers an alternative to animal testing.

Hair color is influenced by genetics and can indicate certain health conditions.

Most patients' skin darkening after sclerotherapy fades on its own within 6-24 months.

Micro needling is a skin treatment that helps with various skin conditions including stretch marks, by boosting collagen production, but it may cause redness and irritation.

Applying a specific inhibitor lightens skin and hair color.

Scientists found cells in hair that are key for growth and color.

A substance called TCQA could potentially darken hair by activating certain genes and increasing melanin.

Epimedium extract helps increase skin pigmentation and could be a new treatment for conditions with reduced pigmentation.

Early subungual melanoma might be treated with less aggressive surgery because it invades the skin under the nail more slowly.

Understanding how melanocyte stem cells work could lead to new treatments for hair graying and skin pigmentation disorders.

Rac1 is essential for proper hair structure and color.

Rice bran extract boosts melanin production in hair follicles.

Fat under the skin can help hair grow longer, darker, and increase cell growth.

Brain hormones significantly affect hair color and could potentially be used to prevent or reverse grey hair.

Gray hair can potentially be reversed, leading to new treatments.