Consultation guide
When a hair consultation should send you to a doctor instead
A routine can fix what you do to your hair. It cannot fix what your body is doing to it.
Most hair and scalp changes are a care problem, and a routine fixes them. Some are not, and a routine cannot touch them at all. Telling the two apart is the actual job of a consultation, and a good one says so plainly instead of writing you a routine anyway.
This page lists the signs that belong with a doctor: sudden or patchy loss, scalp pain, scaling, redness, sores, and loss that comes with other symptoms. It also covers the numbers worth knowing before you worry, since normal shedding is higher than most people expect.
This page gives general information, not medical advice. If anything here matches what you are seeing, the next step is a doctor, not another product.
A consultation reads your hair. It does not diagnose you
A hair consultation, whether given by a stylist, a trichologist, or an AI reading of your photographs, works from what is visible: curl pattern, density, damage, and how your scalp looks at the part and the crown. It says nothing about why a change is happening inside your body.
The Kurli AI Specialist is built around that limit on purpose. It reads your photographs and writes a routine, and when something in them looks like it needs a doctor rather than a routine, it says that instead of guessing further. What a photograph can and cannot show is covered in full on what AI hair analysis can and cannot see.
The rest of this page is the list a consultation should be checking against before it writes anything down. None of it replaces a real exam. All of it should change what a good consultation tells you to do next.
Normal shedding, in numbers
It is normal to lose 50 to 100 hairs a day, according to the American Academy of Dermatology. MedlinePlus gives a wider range, 50 to 200 hairs a day, which reflects how much this varies from person to person and by how much hair you have to begin with.
Shedding is different from hair loss. Shedding is hair falling out in its normal cycle, and it usually stops on its own. Hair loss is something stopping new hair from growing back, and it usually needs a cause found before it stops.
Counting hairs on a pillow or in a drain is unreliable, since it depends on how long since you last washed and how you count. A more useful test, and the full difference between the two, is covered on shedding versus thinning. This page covers when either one crosses into doctor territory.
Sudden or patchy loss
A gradual widening part or a thinner ponytail over months is common and usually a care or ageing pattern. A bald patch or strip appearing within a day or two is not, and the American Academy of Dermatology names this as a distinct pattern worth checking, since it points to a cause a routine cannot reach.
Clumps of hair coming out when you comb or brush, rather than single strands scattered through the day, is the same kind of signal. So is losing hair from a beard or eyebrows in patches, which several hair loss conditions cause alongside scalp loss.
The test is speed and shape. Slow and even is usually a routine problem. Sudden or patchy is not, and it is worth a dermatologist's opinion rather than a change of shampoo.
Scalp pain, burning, or itching
An itchy scalp on its own is common and often a dry scalp or a build-up problem that a routine change can fix. Pain, burning, or tenderness where the hair loss is happening is a different signal, and the American Academy of Dermatology lists intense itching, burning, and tenderness in an area of hair loss as a possible sign of infection.
MedlinePlus puts this plainly on its own list of reasons to contact a healthcare provider about hair loss: pain or itching with the hair loss is one of them, alongside a scalp that looks red, scaly, or otherwise abnormal.
The distinction that matters is whether the scalp itself hurts or looks wrong, rather than whether you simply feel like scratching it. Ordinary dryness itches. An infection or an inflamed follicle hurts, and pain is the signal a consultation cannot argue you out of.
Scaling, redness, or sores
Flaking alone is usually dandruff or dry scalp, and both respond to an over-the-counter routine. Flaking that comes with sores, blisters, or pus is not the same problem. The American Academy of Dermatology describes scaly bald patches with sores or blisters that open and ooze as a sign of a fungal scalp infection, and redness with swelling and sores that leak pus as a sign of a different condition, folliculitis decalvans, that scars the scalp if it is not treated.
MedlinePlus adds areas of infection on the scalp to its own list of reasons to see a doctor about hair loss, separate from ordinary flaking.
The difference a consultation should be looking for is whether the skin itself is broken or draining fluid. Dry, flaky skin is a product problem. Open, weeping skin is a medical one, and it should not wait for a routine to work before someone looks at it.
Loss with other symptoms
Hair loss rarely arrives alone when the cause is inside the body, and the other symptoms are often the more useful clue. The American Academy of Dermatology names thyroid disease as a cause of thinning hair, along with nutrient shortfalls in biotin, iron, protein, or zinc, and hormonal conditions such as polycystic ovary syndrome.
MedlinePlus turns this into a practical checklist: contact a doctor if hair loss comes with acne, new facial hair, or an irregular menstrual cycle, or with weight gain, muscle weakness, feeling cold, or fatigue, since those point toward a hormonal or thyroid cause rather than a hair care one. It also flags hair loss in an unusual pattern, or starting rapidly at an early age, as reasons to check in.
A photograph cannot diagnose any of this, however carefully it is read. If you can name a second symptom alongside the hair change, bring that detail to the doctor first.
The three-month lag of stress shedding
Stress-related shedding, known medically as telogen effluvium, does not start when the stressful event does. StatPearls describes the delay as commonly around three months, with a range of one to six months between the trigger and the shedding it causes. The American Academy of Dermatology notes the same pattern for new mothers, with shedding usually starting about two months after delivery and peaking around four months.
That delay is exactly why people are so often confused about the cause. A move, an illness, a new medication, or a period of poor sleep three months ago can be the real trigger for hair falling out today, even though nothing seems to be happening now.
The useful boundary is duration. StatPearls describes acute telogen effluvium as shedding that lasts under six months, with regrowth taking up to six months to restart and longer still to look normal again. Shedding that keeps going well past that window, rather than settling, is the point to see a doctor instead of waiting it out further.
What a hair care routine cannot treat
A routine changes what you do to your hair: how often you wash it, what you put on it, how much heat you use, and how you handle it wet or dry. But it cannot reach a cause that starts inside the body, a scalp infection that needs medication, or a genetic pattern that needs a prescription to slow.
This is also why a consultation that sells a product for every problem should make you suspicious. If a routine could fix a thyroid-driven shedding pattern, an infected scalp, or an autoimmune patch of hair loss, medicine would not need dermatologists. A consultation that spots one of these signs and still hands you a bottle has skipped what mattered.
A good consultation, ours included, treats 'see a doctor' as a complete answer, not a failed sale.
This cuts both ways. A doctor's appointment is not the place to ask what shampoo to buy, and a hair or scalp routine is not the place to solve a hormone problem. Each does one job well, and the mistake is asking either one to do the other's job because it happens to be the appointment you already booked.
This is general information, not medical advice
Everything on this page describes patterns published by medical organizations, not a diagnosis of your specific hair or scalp. A dermatologist examines your scalp directly, takes your full history, and can order the blood test or biopsy that a description on a page never can.
Where you start differs by country. In the UK, the NHS generally expects you to see a GP first, who can refer you onward. In the US, board-certified dermatologists are the specialists the American Academy of Dermatology points to directly for hair loss diagnosis. If you are unsure who to call, a general family doctor is a reasonable first stop almost anywhere, and they can redirect you if you need a specialist.
When in doubt, book the appointment. A visit that turns out to be nothing costs you an hour. A sign that turns out to be something costs far more if it waits.
Write down what you noticed and when, before you go. The date a change started, whether it came with anything else, and how it has moved since are the details a doctor asks for first, and they are the ones people forget once they are sitting in the chair.
Common questions
Should I see a dermatologist for hair loss?
See one if the loss is sudden, patchy, painful, or comes with a scalp that looks red, scaly, or sore, or with other symptoms like weight change or fatigue. MedlinePlus lists these as reasons to contact a doctor. Gradual, even thinning with no other symptoms is more often a pattern a routine or a specialist can manage over time.
When to see a dermatologist for hair loss?
As soon as a bald patch or strip appears within a day or two, rather than waiting to see if it grows back. The American Academy of Dermatology treats sudden, patchy loss as a distinct signal from the gradual thinning most routines are built to manage. Waiting rarely helps and a diagnosis is what decides the next step.
Can a dermatologist diagnose hair loss?
Yes. The American Academy of Dermatology describes the process: asking how long the loss has gone on, examining the scalp and nails, gently pulling on the hair to see how it releases, and ordering a blood test or scalp biopsy if the cause might be a disease, a vitamin deficiency, a hormone imbalance, or an infection.
Do dermatologists look at scalp?
Yes, closely. A scalp exam is a standard part of diagnosing hair loss, alongside checking the nails, since nail changes sometimes appear with the same conditions. They are also looking for the specific patterns of redness, scaling, or scarring described by the American Academy of Dermatology, which a mirror or a photograph often misses.
Should I see a dermatologist for hair shedding?
Not for ordinary shedding of 50 to 200 hairs a day, which the American Academy of Dermatology and MedlinePlus both describe as normal. See one if shedding is heavier than that for more than a few months, since StatPearls notes that stress-related shedding usually settles within six months, and shedding that does not settle is worth checking.
Should I see a dermatologist for hair thinning?
See one if the thinning is in an unusual pattern, started rapidly, or began at an early age, which MedlinePlus lists as reasons to contact a doctor. Slow, even thinning over years is more often age-related or genetic, and a dermatologist can still confirm the pattern and discuss options even when it is not urgent.
Do I need to see a dermatologist for hair loss?
You need one if a routine cannot reach the cause, which is true for anything genetic, hormonal, autoimmune, or infectious. A routine changes products and habits. It cannot order a blood test, prescribe a treatment, or examine a scalp the way a dermatologist can, so anything beyond ordinary care and shedding belongs with one.
Which doctor should you see for hair loss?
A dermatologist is the specialist most equipped to diagnose hair loss, according to the American Academy of Dermatology, since they examine the scalp and can order tests. A general family doctor is a reasonable first stop if you are unsure, and can refer you to a dermatologist once they have ruled out simpler causes.
What kind of doctor treats hair loss?
A dermatologist treats most hair loss, since it is a skin and scalp specialty. Depending on the cause, you may also see an endocrinologist for a thyroid or hormone problem the dermatologist identifies, or a family doctor for the first visit. The right specialist usually depends on what the initial exam finds, not on the hair itself.
What is hair loss doctor called?
A dermatologist, for most causes. Some countries also have trichologists, who specialize in hair and scalp but are not medically qualified in the way a dermatologist is, and who refer people to a doctor for blood tests, biopsies, or a prescription. If a medical cause is suspected, a dermatologist is the more direct route.
Should I talk to my doctor about hair loss?
Yes, especially if it is sudden, patchy, or paired with another symptom like fatigue, weight change, or an irregular cycle, which the American Academy of Dermatology and MedlinePlus both connect to thyroid disease or hormonal causes. Hair loss is a legitimate reason to book an appointment on its own, not something to mention only in passing.
Can you go to the doctors for hair loss?
Yes. Hair loss is a legitimate medical concern rather than a purely cosmetic one, and a doctor can examine the cause, order tests, and refer you to a dermatologist if needed. In the UK, the NHS's own guidance points people toward a GP as the first step before considering any private clinic.
What are the warning signs that hair loss needs a doctor?
Sudden or patchy loss, a scalp that hurts, itches intensely, or burns, scaling with sores or blisters, redness with pus, and loss alongside symptoms like weight change, fatigue, or an irregular cycle. Any one of these, described by the American Academy of Dermatology and MedlinePlus, is a reason to book an appointment rather than change a routine.
How many hairs is it normal to lose in a day?
Between 50 and 100, according to the American Academy of Dermatology. MedlinePlus gives a wider range of 50 to 200, since this varies a great deal between people. Losing more than that consistently, or noticing your part widen or your ponytail thin over a few months, is worth mentioning to a doctor rather than assuming it will pass.
How long after a stressful event does hair start shedding?
Commonly around three months, with a range of one to six months, according to StatPearls' description of telogen effluvium. That delay is why people rarely connect the shedding to its real cause. New mothers typically see it start around two months after delivery and peak around four months, per the American Academy of Dermatology.
Can a hair care routine fix a scalp condition?
It can fix a dry or flaky scalp caused by product build-up or ordinary dryness. It cannot fix an infection, a scarring condition like folliculitis decalvans, or a hormonal cause of thinning, all of which need a doctor's diagnosis and, often, a prescription. If a routine has not helped after a few weeks, that is a sign to stop guessing.
Is this page medical advice?
No. It describes patterns published by medical organizations so you know what is worth a doctor's attention, but it cannot examine your scalp or your history the way a dermatologist can. Treat it as a reason to book an appointment, not as a diagnosis, and see a doctor directly for anything it describes.
Does the Kurli AI Specialist replace seeing a doctor?
No, and it is built to say so. [The Kurli AI Specialist](/hair-plan) reads your photographs and writes a hair care and styling routine. When something in the photographs looks like it needs a doctor instead, the plan says that plainly rather than writing a routine around it or selling a product for it.
Sources
Hair biology and hair-care facts on this page are supported by these sources. Styling recommendations are guidance.
- Do you have hair loss or hair shedding?, American Academy of Dermatology
- Hair loss, MedlinePlus, U.S. National Library of Medicine
- Telogen Effluvium, StatPearls, NCBI Bookshelf
- Hair loss: Signs and symptoms, American Academy of Dermatology
- Hair loss: Who gets and causes, American Academy of Dermatology
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