1. Evidence-grade legend
A proven — labels & systematic reviews
B promising — small / heterogeneous
C adjunct · D weak
💡 まず結論
Grades are bound to data. Affiliates never move a grade.
AAD/NHS-style reading: grades are bound to data. Affiliates never move a grade.
2. Last reviewed
The date moves only when we re-read. The method page publishes the ranking order. Last reviewed 2026-09-07 · sources AAD / NHS / FDA labels.
3. First-line · adjunct · unproven
First-line (male AGA): topical minoxidil · oral finasteride 1 mg (prescription). Adjunct: microneedling · LLLT · ketoconazole shampoo. Weak: biotin-as-cure · guarantee ads.
4. See a clinician now
Circular patches, red scale/pustules/pain, a child, or loss right after a new drug — stop self-triage.
5. FDA vs off-label vs regional
Topical minoxidil and finasteride 1 mg (men) are FDA-approved for AGA. Dutasteride is approved for AGA in Korea/Japan and off-label in US/EU. Off-label is never shown as “FDA-approved”.
6. Pregnancy · teratogenicity
Finasteride and dutasteride are teratogenic. Anyone who may be pregnant must not handle broken tablets. This app does not prescribe.
7. Minoxidil vs finasteride
| Minoxidil | Finasteride | |
|---|---|---|
| Mechanism | Vasodilator / anagen (not anti-DHT) | Type-II 5α-reductase inhibitor |
| Time | 4–12 mo | 4–12 mo |
| Label | Topical FDA AGA | Men 1 mg FDA |
8. 60-second plain language
~50–100 hairs/day can be normal. Patterned loss suggests AGA; sudden diffuse loss suggests telogen effluvium. Estimate, not a diagnosis.
9. Commercial disclosure
Ads and affiliates are labelled. A link never raises A/B/C/D. Maintenance is continued use, not a product.
10. Care pathway
Symptom → red-flag gate → stage → evidence ladder → clinic questions. Do not skip the gate.
よくある質問
Do you invent PMIDs?
No. Hubs link AAD, NHS, and FDA labels.
もっと読む
セルフチェック →治療法 →植毛 →女性 →最新 →薄毛の原因 →薄毛・脱毛 用語集 →薄毛のよくある質問（Q&A） →Evidence literacy →成分・民間療法のエビデンス評価 →都市別の植毛費用 →研究 →詳細ガイド →すべてのカテゴリ →
医療アドバイスではありません。 一般的な教育のみです。1 mgや5%などの数字は添付文書・市販の濃度例であり用法指示ではありません。治療の開始・中止・変更の前に皮膚科医に相談してください。
⚠️ 医師の診察を受けるべきとき — 自己治療しないで
- 突然のまだら、または円形のはげ
- 赤み・鱗屑・膿・痛み・かゆみ（瘢痕性脱毛の可能性 — 緊急に治療を）
- 切れ毛、または急速な脱毛
- 全身性の徴候を伴う脱毛（体重減少、倦怠感、月経の変化、ニキビ、毛の増加）
- 新しい薬の直後の脱毛
- 子どものあらゆる脱毛