Hair Loss (Complete Guide)

Hair Loss (Complete Guide) is the site’s main entry point. In plain English, the real question is often not just “Why am I losing hair?” but also “Which category fits first, which page should I read next, and how do I move from confusion to the right diagnosis, treatment path, and expectations?”

That matters because hair shedding, pattern hair loss, alopecia areata, scarring alopecia, and hair breakage do not follow the same roadmap. Some stories mainly need timeline interpretation. Some need workup. Some need treatment planning. And some need faster escalation because the pattern is no longer compatible with simple reassurance alone.

Medical note: This page is for general education and does not provide personal medical advice. If you have rapid worsening, patchy loss, scalp pain or burning, crusting, pustules, or a smooth shiny scalp, start here: When to See a Doctor.

Quick navigation

Step 1: Shedding vs breakage
Step 2: Classify hair loss into 3 buckets
Published key articles (Non-scarring)
Published key articles (Scarring)
Step 3: Use the “Types” roadmap
Fast diagnosis-first entry points
When you should not wait
Diagnosis & care
Treatment decision pages
Patient education
Medical classification

Step 1: Shedding vs breakage (the fastest clarity)

If your “hair loss” looks more like shorter pieces, snapped fibers, frizz, or uneven shaft damage than full hairs coming out from the root, start here: Shedding vs Breakage (Practical).

Step 2: Classify hair loss into 3 buckets

The site’s main structure starts with 3 broad buckets:

Non-scarring alopecia (often potentially reversible depending on the cause)
Scarring alopecia (follicles can be permanently damaged, so early evaluation matters)
Hair breakage (hair-shaft fragility; follicles usually preserved)

Published key articles (Non-scarring)

Published key articles (Scarring)

Step 3: Use the “Types” roadmap

Not sure where you fit yet? Use the overview page: Types of Hair Loss (Overview).

Fast diagnosis-first entry points

If you already know what stands out most, use the fastest entry point below instead of browsing the whole site map first. These routes are grouped by the kind of clue the reader usually notices first.

Recovery, trigger, and lab-linked routes

When the real question is no longer “why did I shed?” but “why am I not fully recovered yet?”, use Hair Regrowth & Recovery Hub: Next Steps.
When the timing clearly follows illness, fever, surgery, blood loss, childbirth, weight loss, or major stress, start with Trigger-Related Shedding Hub: Causes & Timelines.
If ferritin, thyroid, nutrient, or hormone-linked clues are driving the uncertainty more than one obvious external trigger, use Lab-Linked Hair Loss Hub: Iron, Thyroid, Nutrients & Hormones.

Patchy, childhood-onset, and special-site routes

For one or more localized patches rather than diffuse thinning, use Patchy & Localized Hair Loss Hub: Next Steps.
For childhood-onset sparse hair, hair that never grew normally, woolly or abnormal texture, or congenital / syndromic clues, use Child & Congenital Hair Loss Hub: Clues & Next Steps.
For eyebrow thinning, eyelash loss, lash gaps, or brow/lash loss with eye-area symptoms, use Eyebrow & Eyelash Loss Hub: Causes & Next Steps.
For beard or moustache patch loss, beard-area scaling, or shaving-related inflammatory clues, use Beard Hair Loss: Causes, Clues & Next Steps.
For hairless shins, ankles, or feet where friction/removal, autoimmune patches, or circulation-type warning clues are the main question, use Leg Hair Loss: Causes, Clues & Next Steps.
For multiple body-hair sites, body-wide thinning, or uncertainty across beard, brows, lashes, legs, arms, hormone clues, or circulation-type warning signs, use Body Hair Loss: Causes, Clues & Next Steps.
For underarm or pubic hair loss, especially with grooming irritation, smooth patches, genital-area skin symptoms, or hormone-type clues, go to Underarm & Pubic Hair Loss: Causes & Next Steps.

Visible thinning, density, and pattern clues

If the main complaint is visible thinning — especially a wider part, thinner ponytail, more visible scalp, crown loss, or a changing hairline — use Visible Thinning: Causes, Clues & Next Steps.
For diffuse or all-over thinning, use Diffuse Hair Loss: Causes, Clues & Next Steps.
If the clearest concern is seeing more scalp, use Visible Scalp Hair Loss: Causes, Clues & Next Steps.
When lower overall bulk or a smaller ponytail is the main clue, use Thin Ponytail Hair Loss: Causes, Clues & Next Steps.
If the most obvious sign is a widening center part, use Wide Part Hair Loss: Causes, Clues & Next Steps.
If the concern is mainly hairline, temple, or edge loss, use Hairline Hair Loss: Causes, Clues & Next Steps.
If the concern is mainly crown thinning, use Crown Hair Loss: Causes, Clues & Next Steps.

Scalp symptoms, broken hairs, and patch-first clues

If itch, scale, pain, pustules, crusting, or scalp inflammation are driving the story, use Scalp Symptoms & Hair Loss: Causes & Next Steps.
If scalp pain, burning, or tenderness is part of the story, use Scalp Pain and Hair Loss: Causes, Clues & Next Steps.
If the main clue is short snapped hairs rather than full-length shedding, use Broken Hairs on Scalp: Causes, Clues & Next Steps.
If the problem is patchy and you want a direct complaint-first guide, use Patchy Hair Loss: Causes, Clues & Next Steps.

When you should not wait

If you notice scalp pain or burning, pus, heavy scale, open sores, or shiny smooth bald patches, read this first: When to See a Doctor.

Diagnosis & care

Treatment decision pages

Patient education

Medical classification (simple but dermatology-aligned)

If you want the medical logic behind the structure in plain English, use Medical Classification.

Last updated: April 27, 2026.