Why hair thins, and the evaluation that comes first

Most people arrive having already decided what they want done. That is understandable, and it is the wrong end of the problem. Several different processes thin hair, they look similar in a mirror, and they respond to completely different things. Treating the wrong one wastes months.

Androgenetic hair loss, the pattern type, is gradual. In women it usually widens the part and thins the crown while the front hairline holds. In men it recedes at the temples and thins at the vertex. It runs in families, it is driven by hormone sensitivity in the follicle rather than by a hormone level being wrong, and it does not resolve on its own.

Telogen effluvium is different. It is a shedding phase triggered by something that happened two to four months earlier: an illness, a surgery, a fever, childbirth, a crash diet, a bereavement, a new medication. Hair comes out in handfuls rather than thinning quietly, and it usually recovers once the trigger has passed. Someone in the middle of a telogen shed does not need a device. They need the trigger identified.

Then there are the medical causes that have nothing to do with hair at all. Thyroid disease, iron deficiency, protein deficiency, certain autoimmune conditions and a long list of prescription medications all show up in the hairbrush. These are worth finding for reasons far larger than hair.

Scarring hair loss is the one that changes the urgency. If the follicle itself is being destroyed, the window to preserve what is left is finite. That is a referral, not a treatment plan, and it is one of the specific things an evaluation is looking for.

Hair grows slowly and it grows in cycles, which means every honest answer about hair treatment is measured in months. A follicle that begins responding today produces visible hair weeks later. Nothing shows a difference at two weeks, and anyone promising that is selling something.

A realistic first checkpoint is three months, with photographs taken under the same light and from the same angle as the first visit. Real assessment comes at six months. This is the single most common reason treatment fails: it was stopped at week eight because nothing appeared to be happening, during the exact period when nothing was supposed to be happening yet.

Maintenance is part of the decision, not a footnote to it. Treatments that work for pattern hair loss work while they are being used. Stopping returns the follicle to the path it was on. That is not a reason to avoid treatment, but it is something to understand before starting rather than a year in.

It is also worth saying plainly that not every result is achievable. Density that has been lost for a decade, in areas where the follicular openings have closed, does not come back with a topical or a device. Knowing the difference between thinning hair that can be thickened and hair that is gone is most of what an evaluation is for.

Northeast Florida adds two things to the picture. The first is sun. Scalp skin that is exposed through thinning hair takes real ultraviolet damage here, all year, and that damage matters for its own reasons. Scalp sun protection belongs in any hair plan on this coast.

The second is water and salt. Frequent swimming, pool chemistry and sea water make hair drier and more fragile, which is breakage rather than loss. Breakage and loss feel identical to the person experiencing them and are addressed completely differently. Distinguishing them is part of the examination.

Our office is on R G Skinner Parkway in southside Jacksonville, and patients travel in from St Johns, Ponte Vedra and Nocatee. The first appointment is a consultation, not a treatment. You will leave knowing what we think it is and what we would propose, and you can go away and think about it.