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SETDB1 is essential for controlling DNA methylation, silencing retrotransposons, and maintaining skin cell health, with its absence leading to skin inflammation and hair loss.

Alexander the Great's engineers built a causeway using a natural sand bridge, some tiger moths avoid bats by mimicking toxic relatives' sounds, early metabolism and RNA enzymes support the ancient RNA world theory, and vitamin D is crucial for hair growth and its absence can cause baldness.

A handheld dermatoscope helps diagnose different types of hair loss effectively.

Perifollicular erythema can indicate active frontal fibrosing alopecia.

Fibrosing alopecia in a pattern distribution is a unique hair loss condition that may respond to antiandrogen therapy.

Trichoscopy helps diagnose hairline recession causes in Egyptian women, with androgenetic alopecia being the most common.

A new type of hereditary hair loss in a Chinese family is linked to chromosome 2p25.1–2p23.2.

Assessing CD8+ T cell levels before surgery may improve vitiligo treatment outcomes.

The clinical signs of Adams-Oliver syndrome can vary greatly, even among family members.

Hair diameter difference, brown skin discoloration around hair follicles, and missing hair in certain areas are key signs of androgenetic alopecia (commonly known as hair loss) when viewed under a dermoscope.

Vitamin D Receptor is crucial for normal skin and hair growth.

Alopecia areata can cause spotty white areas on nails.

Mutations in NIPAL4 cause skin issues by disrupting lipid layers, but some improvement is seen with topical treatment.

Hormonal imbalances are a key cause of missed menstrual periods in women.

Amenorrhea, or missing periods, is caused by various factors and is treated based on the specific cause.

A newborn girl has a rare skin condition with two ulcers on her buttock that are healing on their own.

Hair color is due to active pigment cells in hair during growth.

Non-binary transgender individuals need personalized hormonal treatments for better well-being and quality of life.

Long-term minoxidil use can cause pseudoacromegaly, but stopping it improves symptoms.

Congenital atrichia is a rare condition where children are born without hair, and treatment is often ineffective.

The document concludes that the girl's hairlessness is likely inherited from her parents.

Men with baldness due to androgenetic alopecia still have hair stem cells, but lack specific cells needed for hair growth.

Mutations in the Vitamin D receptor gene can cause hair loss similar to mutations in the Hairless gene.

Adam10 enzyme is crucial for healthy skin and proper Notch signaling.

Dlx3 is essential for hair growth and regeneration.

Removing both Atr and Trp53 genes in adult mice causes severe tissue damage and death due to DNA damage.

New vitiligo treatments focus on controlling immune damage and restoring skin color.

Amenorrhea is relatively rare and initial testing should check FSH, TSH, and prolactin levels.

The conclusion is that certain scalp tissue changes are characteristic of lichen planopilaris, with mucinous perifollicular fibroplasia being a new feature for diagnosis.

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