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Alopecia areata causes hair loss due to an immune attack on hair follicles, influenced by genetics and environment.

Scalp biopsies are essential for accurately diagnosing alopecia areata.

A man's sudden hair loss and color change to white was diagnosed as alopecia areata and it improved on its own after six months.

Laser hair removal might also work by damaging blood vessels around hair follicles.

A hand-held dermatoscope helped differentiate between pressure-induced alopecia and alopecia areata in a young patient, who then experienced hair regrowth within a month.

Lupus erythematosus can mimic alopecia areata, and trichoscopy is key for accurate diagnosis and better patient outcomes.

Increased TEMRA cells can predict treatment outcomes in rapidly progressive alopecia areata.

Certain cells from hair follicles can create new hair and contribute to hair growth when implanted in mice.

A rare form of alopecia causes hair thinning without bald spots and may be more common than thought, responding well to steroid treatment.

Trichoscopy helped diagnose and treat a woman with two different types of hair loss.

CD3+ T-cell presence is a reliable marker to tell apart alopecia areata from pattern hair loss.

Syphilitic alopecia is a rare hair loss condition in secondary syphilis that looks similar to another condition but can be diagnosed with specific tests and responds to antibiotics.

Some medications for inflammation can cause a condition with scalp rashes and hair loss, often linked to Crohn's disease, and may require treatment changes to prevent permanent hair loss.

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

Psoriasis or contact dermatitis can override alopecia areata, allowing hair growth.

The study found certain scalp biopsy features can help tell apart alopecia areata from pattern hair loss even when typical immune cells are not seen.

Alopecia areata can look like frontal fibrosing alopecia, making diagnosis hard.

Other common signs, not just the well-known immune cells around hair bulbs, are important for diagnosing hair loss from alopecia areata.

Non-scarring hair loss is common in lupus patients and can be diagnosed with specific hair and tissue tests.

Scientists created a new cell line from Cashmere goat hair and found that cytokeratin 13 is a unique marker for certain skin cells.

Scalp biopsies help tell apart androgenetic alopecia and alopecia areata.

The study found that the cause of alopecia areata can be identified through tissue analysis, and vertical sections are enough for diagnosis.

A woman had temporary hair loss due to a stress-related condition after a facelift.

Horizontal scalp biopsy sections are better for diagnosing alopecia areata, showing fewer hair follicles and more miniaturized hairs.

Eosinophilic infiltrate is not a reliable indicator for diagnosing chronic alopecia areata.

The study concluded that AAI and DAA are forms of the same disease, with different symptoms in men and women, and that corticosteroid treatment is effective.

T-cell patterns in skin help distinguish alopecia areata from androgenetic alopecia.

Transverse scalp biopsy sections help diagnose different alopecias by showing hair follicle details and inflammation patterns.

Scalp biopsy helps tell apart permanent and temporary hair loss types and guides treatment.

The patient's hair loss is most likely due to diffuse alopecia areata.