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The symposium highlighted the skin's role in sensing itch, pain, touch, and pleasure, and discussed new research and techniques for understanding and treating these sensations.

Young adults have about 230,000 tactile nerve fibers, decreasing 5-8% per decade with age.

The skin has about 230,000 touch-sensitive nerve fibers, with high concentrations in the hands and face.

Acupuncture may improve reproductive and metabolic functions in PCOS without negative side effects, but more research is needed to confirm its effectiveness.

Skin has specialized touch receptors that can tell different sensations apart.

Touch sensitivity in mouse skin decreases during hair growth due to changes in touch receptors.

Touching hair can activate nearby nerve cells through signals from the hair's outer layer.

Different hair follicles in the skin are innervated by unique combinations of mechanosensory neurons, crucial for touch sensation.

Scientists found a specific group of itch-sensing nerve cells in mice important for feeling itch but not for sensing heat or touch.

Urologic diseases and treatments in older men can negatively affect fertility, and doctors should talk to patients about this.

Manatee whiskers are specially adapted for touch in water.

Mouse touch-sensitive nerve cells adjust their connections based on competition with other similar cells.

Dynamic, light touch is sensed through a common mechanism involving Piezo2 channels in sensory axons.

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

The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.

Neurotrophin-4 increases calcium current in specific mouse neurons through the PI3K pathway.

Nerves and chemicals in the body can affect hair growth and loss.

Progress has been made in skin and nerve regeneration, but more research is needed to improve methods and ensure safety.

Lanceolate complexes in mouse hair follicles are essential for touch and depend on specific cells for maintenance and regeneration.

BMP signaling is essential for the development of touch domes.

Biologics, especially Dupilumab, are effective and safe for treating severe childhood eczema.

Meis2 is essential for touch sensation and proper nerve connection to touch receptors in certain skin areas of mice.

The document concludes that more research is needed to understand how to treat muscle pain with drugs.

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

Most types of hair loss can regrow naturally, but there are no effective cures for male pattern or age-related hair loss, and only limited options for females.

Behavioral dermatology treats skin problems by considering both emotional and physical factors.

Human skin's melanocytes respond to light by changing shape, producing pigments and hormones, which may affect sleep patterns.

Different whale and dolphin species have unique whisker follicle structures, suggesting they might use their whiskers in various ways.

The document concludes that accurate diagnosis and treatment of scalp itch require differentiating between various conditions using a proposed five-step evaluation process.

CD4+ skin cells may be precursors to basal cell carcinoma.