Hair Loss: How to Find the Cause and Choose the Right Treatment
"My hair is falling out" can describe completely different conditions: diffuse shedding after a trigger, gradual patterned thinning, patchy bald spots, an inflamed scalp, or more than one cause at the same time. So the most important step is not buying a supplement or starting sessions, but defining the pattern first and then choosing the treatment that matches it.
Start here
The Hair-Loss Decision Tree: What to Do Before Buying Any Treatment — Diffuse shedding, pattern thinning, patchy loss and inflammatory hair loss are different problems. This guide turns the first steps into a decision tree.
What does your hair loss look like?
- Sudden shedding from the whole scalp — Start with the guide that explains the different types of hair loss.
- A widening part or gradually thinner hair — Start with the hair loss guide.
- Thinking about minoxidil — First learn when it helps and how to use it.
- Dandruff, itching or an inflamed scalp — Start with the guide to dandruff and scalp inflammation.
Before you choose a treatment
The pattern matters more than the number of hairs
Counting the hairs you lose each day is less useful than knowing whether there is thinning at the part or the front, defined bald patches, or sudden diffuse shedding. An examination and scalp dermoscopy (trichoscopy) can change the diagnosis and the plan.
Minoxidil is not a treatment for every kind of hair loss
Minoxidil helps in specific patterns, but on its own it does not treat every cause of hair loss. Using it without a diagnosis can delay finding another cause that needs a different approach.
Supportive treatments stay supportive
PRP, supplements and some procedures may have a place, but their benefit depends on the underlying diagnosis. A supportive treatment does not make up for a wrong diagnosis or for a proven treatment that was never used.
By treatment
- Minoxidil: The Hair-Loss Decision Tree: What to Do Before Buying Any Treatment, Minoxidil 5% for Women: What Actually Matters, Male Pattern Hair Loss: Signs, Minoxidil and Finasteride, and When Results Show
- Finasteride: Male Pattern Hair Loss: Signs, Minoxidil and Finasteride, and When Results Show
- Hair transplant: Male Pattern Hair Loss: Signs, Minoxidil and Finasteride, and When Results Show
- JAK inhibitors: Alopecia Areata: Types, Does Hair Grow Back, and Treatments from Injections to JAK Inhibitors
- PRP: PRP for Hair Loss: Does It Really Work, Who Is It For, and How Many Sessions?
Hair & scalp guides
- The Hair-Loss Decision Tree: What to Do Before Buying Any Treatment — Diffuse shedding, pattern thinning, patchy loss and inflammatory hair loss are different problems. This guide turns the first steps into a decision tree.
- Hair Shedding or Pattern Hair Loss? How to Tell Which One You Have and How It's Treated — How many hairs is it normal to lose a day? How does temporary shedding after childbirth or illness differ from gradual hereditary thinning and from patchy hair loss, and when do you need tests or treatment?
- Minoxidil 5% for Women: What Actually Matters — Concentration, application, the first months of treatment and the mistakes that make a simple therapy look ineffective.
- Male Pattern Hair Loss: Signs, Minoxidil and Finasteride, and When Results Show — How male pattern hair loss starts, why starting early matters, how to use minoxidil, how effective finasteride is and its side effects, what happens if you stop, and where PRP, laser and transplants fit.
- Alopecia Areata: Types, Does Hair Grow Back, and Treatments from Injections to JAK Inhibitors — What alopecia areata is and how it looks, whether hair regrows on its own, how it's diagnosed, treatments from corticosteroid injections to modern JAK-inhibitor pills, and how to manage appearance during treatment.
- PRP for Hair Loss: Does It Really Work, Who Is It For, and How Many Sessions? — What platelet-rich plasma is, what the evidence says about hereditary hair loss, how many sessions you need, how it fits alongside minoxidil and finasteride, and who should not have it.
- Dandruff and Seborrheic Dermatitis: Causes, Symptoms, and the Best Shampoos and Treatments — Why dandruff appears and comes back, how it differs from seborrheic dermatitis, which shampoo ingredients to look for, how to use them for your hair type, and when you need prescription treatment.
Common questions
- How long does minoxidil take to work? — Do not judge minoxidil after only a few weeks. With 5% minoxidil solution used twice daily, some men may begin to notice early improvement after about 2 months, while others may need 4 months or longer before the difference is clear. In women with female pattern hair loss, it may take 6–12 months of continuous use to judge how well minoxidil is working.
Medical review
The content and connected guides on this page are written and medically reviewed by Dr. Yousef Abo Zarad, a German board-certified dermatologist and venereologist. Medical references are listed inside the detailed guides.
About Dr. Yousef and verification sources · Editorial and medical review policy