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Topic

Hair thinning & loss

Widening parts, shedding and midlife hair thinning - how clinicians sort causes, lab clues, and oral or topical treatment options by pattern and history.

Female hair-loss causes

Common questions

Can scalp folliculitis cause hair loss?

It can. Mild superficial folliculitis may cause temporary shedding or broken hairs, but scarring conditions such as folliculitis decalvans or dissecting cellulitis can damage follicles permanently if inflammation is not controlled.

Does perimenopause directly cause hair loss?

Perimenopause can contribute, but it is not a complete diagnosis. Hormone fluctuation can expose androgen-sensitive thinning, while telogen effluvium, thyroid disease, low ferritin, medications, rapid weight change, and scalp inflammation can also cause shedding after 40.

Does a widening part mean female-pattern hair loss?

Often, but not always. A study of 178 postmenopausal women aged 50 to 65 found female-pattern hair loss in 52.2%, but sudden shedding 2 to 4 months after a trigger can point toward telogen effluvium or a mixed picture.

Can hypothyroidism or hyperthyroidism cause hair loss?

Yes. Reviews link hypothyroidism and hyperthyroidism with widespread or diffuse shedding, but the relationship is not specific enough to diagnose thyroid disease from hair loss alone. Pattern, timing, scalp findings, and symptoms still matter. [3] [4]

How do I get prescribed spironolactone for hair loss?

Bring the hair-loss pattern, timeline, photos, scalp symptoms, acne or facial-hair clues, medication list, supplements, blood pressure history, and prior minoxidil use. A clinician can decide whether spironolactone belongs in the plan after diagnosis and safety screening.

Is oral minoxidil FDA-approved for women's hair loss?

No. Oral minoxidil tablets are labeled for hypertension that has not responded adequately to other therapy. The current tablet label states that use to promote hair growth is not an approved indication.

Is 5% minoxidil foam stronger than 2% solution?

It is not that simple. In a 24-week phase III trial, once-daily 5% foam and twice-daily 2% solution both increased hair count, but the foam did not meet the study's prespecified noninferiority criterion.

Does microneedling help female pattern hair loss?

It can help as an add-on in selected patients. One 120-woman trial found the largest 24-week hair-density gain with 5% minoxidil plus microneedling every 2 weeks, and a 40-woman trial reported 85% effectiveness with microneedling plus 2% minoxidil versus 45% with minoxidil alone.