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Transverse sections are better for non-scarring hair loss, vertical sections are better for lichen planopilaris, and either method works for other scarring hair loss types.

Psoriasis skin changes are complex and might need several biopsies for a clear diagnosis.

The document concludes that accurate diagnosis of different types of hair loss requires careful examination of hair and scalp tissue, considering both clinical and microscopic features.

Radiation-induced alopecia after angioembolization usually heals on its own and can look like other hair loss types, but patient history helps prevent misdiagnosis.

Dilated follicular infundibula and increased catagen/telogen follicles are key indicators for diagnosing alopecia areata.

Different skin diseases show unique patterns of skin cell separation, cell death, and granular layer changes.

Lipedematous scalp is mainly caused by an increase in fat tissue under the skin and is different from lipedematous alopecia.

Some breast cancer patients developed permanent hair loss after chemotherapy and hormonal therapy, showing patterns similar to common baldness and alopecia areata.

Most women with long-term, widespread hair loss need a tissue examination for an accurate diagnosis.

Dermoscopy helps distinguish between scarring and non-scarring hair loss and accurately diagnoses hair and scalp conditions without needing hair plucking.

Two new signs, 'signet ring vessels' and 'hidden hairs,' help tell apart scalp psoriasis and seborrheic dermatitis.

Trichoscopy is useful for quickly diagnosing different types of hair loss without needing biopsies.

The document describes previously unreported unique skin changes in a rare genetic disorder called Hereditary mucoepithelial dysplasia.

Trichoscopy can reveal specific hair and scalp changes in linear morphea.

The "spade sign" is a highly specific indicator for diagnosing acne keloidalis.

A 5-year-old girl with a rare skin disorder was effectively treated with skin creams instead of oral medication.

A girl with red hair developed hair-pulling and body image disorders after being bullied for her hair color.

Vitiligo is a skin condition causing white spots, more common in women, often starts before age 20, and can affect mental health.

Facial dark spots can be caused by the sun, genetics, makeup, or medicine, and are diagnosed by patient history and skin tests.

Injecting a mix of human skin and hair cells into mice can grow new hair.

Accurate diagnosis of cicatricial alopecias requires thorough scalp examination and multiple biopsy techniques.

Frontal fibrosing alopecia is a hair loss condition in postmenopausal women, similar to lichen planopilaris, with ineffective treatments.

Different types of hair loss have unique features under a microscope, but a doctor's exam is important for accurate diagnosis.

Eruptive vellus hair cysts are a cosmetic skin condition, more common in young adults, with few effective treatments.

The document concludes that Borrelia afzelii causes a skin condition in France, a gene is linked to hair loss in Caucasian women, and various genetic mutations affect skin diseases.

A new method using visual aids to diagnose hair diseases was effective after brief training.

A 7-year-old dog with a rare autoimmune disease was euthanized due to severe anemia and poor prognosis.

Some people with pattern hair loss may also have scalp inflammation and scarring similar to lichen planopilaris.

Oral isotretinoin effectively treats yellow facial papules in frontal fibrosing alopecia patients.

A woman had temporary hair loss after a facelift, which improved on its own within a year.