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Horizontally sectioned scalp biopsies are more reliable for diagnosing hair loss in women when three samples are taken instead of one.

Coal tar shampoos, salicylic acid, and topical corticosteroids are effective for scalp psoriasis, with Vitamin D3 analogues also showing benefits; severe cases may require stronger medication with more risks.

Red light therapy at 655 nm significantly improved hair growth in men with hair loss.

Treating psoriasis on the scalp, nails, and skin folds is challenging, often requiring systemic treatments for severe cases, with some success in topical and biologic treatments.

Drugs penetrate scalp skin better than abdominal skin, with scalp hair follicles aiding in higher drug delivery.

Nearly half of the French individuals surveyed reported having a sensitive scalp, more common in women, often linked to hair loss and symptoms like itching, and triggered by factors including shampoos and pollution.

The scalp's microorganisms significantly affect hair health and disease.

Trichoscopy is a quick, noninvasive method to diagnose hair and scalp disorders, often reducing the need for biopsies.

Some breast cancer chemotherapy can cause permanent hair loss.

Micrografts and minigrafts are safe and effective for hair transplantation in facial and scalp reconstruction, providing high patient satisfaction.

Different scalp reconstruction methods work well, but the best one depends on the patient's unique needs.

Certain bacteria and fungi are linked to healthy scalps and dandruff, suggesting that the scalp's microbial balance affects its health.

Finasteride effectively reduces hair loss by decreasing androgen levels.

Antidepressants may improve or resolve scalp dysesthesia in most patients.

Using dermoscopy to guide scalp biopsies is an effective way to diagnose cicatricial alopecia.

Scalp cooling can reduce chemotherapy-induced hair loss and should be available in all hospitals.

Scalp itching is common and hard to diagnose due to the complex nerve structure of the scalp.

Small white dots on the scalp seen with a dermoscope correspond to sweat ducts and vary with different hair disorders.

Finasteride reduces scalp DHT levels, potentially treating male pattern baldness.

Bimatoprost, a glaucoma medication, may also help treat hair loss.

Cooling the scalp below 22°C before and during chemotherapy can help prevent hair loss.

Scalp cooling significantly reduces hair loss in chemotherapy patients.

Alopecia areata shows a unique type 1 interferon signature, suggesting potential treatment by targeting this pathway.

Scalp skin barrier affects hair loss; personalized treatments needed.

Beard cells, unlike scalp cells, produce growth factors in response to testosterone, which may explain differences in hair growth.

Microsurgical reconstruction effectively covers complex scalp defects but doesn't improve survival for cancer-related cases.

Severe anti-TNF-α induced scalp eruptions often need stopping the drug and using systemic therapy to avoid scarring.

Alopecia areata patients have more Propionibacterium acnes and less Staphylococcus epidermidis on their scalps.

Effective dandruff treatment requires delivering antifungal agents to the scalp follicular infundibulum.