Why is my hair changing?

A hair is part of a cycle.

The visible strand is the hair shaft. The follicle is the structure within the skin that produces it. A strand coming out does not necessarily mean the follicle is gone.

These phases help explain why hair changes and responses to treatment take time. The character world in Inside the Follicle is a way to introduce these ideas, rather than a literal picture of microscopic anatomy.

And shedding? Exogen describes the release of the old hair shaft. It is a useful distinction from telogen, the resting phase. A shed strand does not, on its own, tell you why your hair is changing.

Try the hair-cycle questions and tap-to-open glossary →

Start with your experience.

Maybe your part looks wider. Maybe you are seeing more hair when you wash, or changing how you style it. Tell the clinician what caught your attention and how long it has been on your mind.

It is also worth saying what matters most: keeping the hair you have, understanding a sudden change, feeling more comfortable with your appearance, or knowing whether treatment is worth the commitment.

Has your part widened gradually? Are you noticing more hairs when washing? Are strands breaking, or are there distinct patches? Those observations are useful, but a photograph or an online checklist cannot establish the cause.

Inherited pattern loss is one possibility. Illness, stress, weight loss and iron deficiency are among other possible contributors. More than one process can occur at the same time.

What a useful evaluation can include.

A clinician may ask when the change began, examine the scalp and hair, and consider your health and medication history. Testing is selected for a reason: blood tests or a scalp biopsy can be useful in some circumstances, but everyone does not need the same panel.

Bring a short timeline, medication and supplement names, and photographs you already have that show the change. Note scalp discomfort, itching or visible skin changes. Do not stop a prescribed medicine on your own because you suspect it affects your hair.

Hormones and hair: part of the picture.

Life stage and hormonal conditions can matter, but a hair concern alone does not diagnose a hormone problem. Most people with female-pattern hair loss have normal hormone levels. Symptoms and history help determine whether additional assessment is appropriate.

Ask what a proposed test would clarify and how its result could change the plan. The goal is to answer your clinical question, rather than automatically moving from hair thinning to hormone therapy, supplements or a wellness package.

If another condition is identified, ask how its treatment relates to the hair changes and what improvement is realistic. This page does not recommend hormone treatment for scalp-hair growth.

Take these questions to your appointment.

• What are the likely causes of the change I am seeing?
• Could more than one cause be present?
• What examination or testing would help, and what would it change?
• What should I watch for, and when should I return?
• Which options fit my diagnosis and goals?

If the change is sudden, patchy, or accompanied by a sore or inflamed scalp, arrange a clinical assessment rather than relying on a cosmetic treatment guide.

Where Felix fits.

Felix is here to help you get comfortable with the ideas. Think of him as a guide who pauses at an unfamiliar word and asks the question you may have been about to ask.

The clinician’s role is to explain what those ideas mean for your health. Bring your questions back to a qualified clinician who can consider your own history and goals.

Hair changing around midlife?

Perimenopause, menopause and other health changes may be part of the context. The hair change still needs its own assessment, and additional testing is guided by the findings.