Male-Pattern Hair Loss#

Male-pattern hair loss is a slow, hereditary thinning caused by hair follicles becoming sensitive to a hormone called dihydrotestosterone (DHT). DHT is made when an enzyme called 5-alpha reductase converts testosterone into DHT in the scalp. In men with the genetic predisposition, DHT binds to receptors in hair follicles and causes them to gradually shrink - producing thinner, shorter, less pigmented hairs - and eventually stop producing visible hair at all.

It's the most common cause of hair loss in men, affecting roughly half of men by age 50 and a higher proportion in older age groups.

Typical features:

• Receding hairline at the temples (the "M-shape").
• Thinning at the crown (top of the head).
• Frontal forelock preserved in many men - so the front-and-crown pattern develops while a strip of hair stays at the very front.
• Back and sides preserved - the follicles there are not DHT-sensitive in the same way. This is why hair transplants work: those follicles, when moved, keep growing in their new location.

The Hamilton-Norwood scale is the classification clinicians use to describe how far the pattern has progressed. The clinician will assess this from your description and any photos you upload.

It can start as early as the late teens or early 20s and progresses slowly over years to decades. Earlier onset usually means a more advanced pattern by middle age unless treatment is started.

Yes - but not in the simple "your mother's father" way it's sometimes described. Genes from both sides of the family contribute. A family history on either side is a useful predictor, but absence of family history doesn't rule it out.

For straightforward male-pattern hair loss in a young, otherwise healthy man, baseline bloodwork isn't always necessary. The clinician may recommend bloodwork if:

• Hair loss is rapid or diffuse (all over the scalp, not just the pattern areas) - this suggests something other than male-pattern hair loss.
• You have other symptoms like fatigue, weight change, mood changes.
• You're considering an oral prescription and the clinician wants a baseline.
• You're over 50 and a PSA discussion is appropriate before starting an oral 5-alpha reductase inhibitor.

For a broader hair-loss workup, see Hair Loss - General.

You're a good fit if you:

• Have a recognisable male-pattern of thinning (hairline, crown, or both).
• Are over 18.
• Are willing to commit to daily, ongoing treatment - because benefits stop when treatment stops.
• Understand that regrowth is gradual (months, not weeks).

• Patchy, well-defined bald patches - this suggests alopecia areata (autoimmune) or another diagnosis, which needs different treatment.
• Rapid, diffuse shedding all over the scalp - likely telogen effluvium (stress, illness, medication, deficiency) or an underlying medical issue.
• Hair loss with scalp redness, scaling, itch, or scarring - possible scarring alopecia, which needs dermatology assessment to preserve as much hair as possible.
• Sudden, complete hair loss in patches or all over.
• Children and adolescents under 18.
• Patients planning fatherhood in the next several months who are considering oral 5-alpha reductase inhibitor medication - the clinician will discuss timing and alternatives.

If you're not sure your hair loss fits the pattern, submit the intake anyway - the clinician will assess from your description and any photos.

1. Prescription topical hair-loss treatment (applied to the scalp).

A topical preparation applied directly to the affected areas of the scalp. Some formulations combine the topical with a low dose of a 5-alpha reductase inhibitor for added effect. The clinician will discuss which formulation fits your situation.

2. Prescription oral 5-alpha reductase inhibitor.

A daily oral tablet that blocks the conversion of testosterone to DHT, reducing the hormonal signal that shrinks hair follicles. Available at different strengths.

3. Over-the-counter topical hair-loss treatment.

A separate over-the-counter topical (the kind available at any pharmacy without a prescription) is widely used as a stand-alone or combination therapy. It works through a different mechanism - improving blood flow and shifting follicles into the growth phase. The clinician can advise on whether to add this and how to use it.

Combination treatment is often more effective than any single agent. Many men use the over-the-counter topical plus the oral prescription, or the prescription topical plus the oral prescription.

It blocks the enzyme that converts testosterone to DHT. Lower DHT in the scalp means less hormonal pressure on hair follicles - shedding slows, follicles stabilise, and over months some shrunken follicles produce thicker hair again.

The medication treats the cause of male-pattern hair loss (the DHT signal), which is why it is generally the most effective single treatment. It doesn't lower total testosterone - in fact testosterone may rise slightly because it isn't being converted to DHT.

The over-the-counter topical works mainly by shortening the resting phase of the hair cycle and stimulating earlier growth, plus modestly improving local blood flow. The prescription topical formulations include a 5-alpha reductase inhibitor delivered locally to the scalp, which lowers DHT in the scalp specifically with much less systemic exposure than the oral form.

It depends on:

• Severity. More established thinning often benefits from the oral medication, alone or with topical.
• Side-effect concerns. Some men prefer the topical because there's less systemic exposure to the medication. The trade-off is usually somewhat less effect than the oral.
• Convenience. Oral is one tablet a day. Topical takes a few minutes to apply once or twice a day and can leave residue.
• Cost. Oral generics are inexpensive. Compounded topical formulations cost more.

There's no universal "best" choice. The clinician will walk through it with you in the consultation.

Yes - and many men do. Combining mechanisms (DHT blockade plus growth-phase stimulation) is more effective than either alone for many patients.

Yes. Compounded formulations are mixed by specialty pharmacies and can combine the over-the-counter topical with a low dose of a 5-alpha reductase inhibitor in a single preparation. The clinician can prescribe a compounded formulation and direct you to a Canadian compounding pharmacy.

No - TeleTest does not prescribe high-dose 5-alpha reductase inhibitor therapy for hair loss.

Some patients ask for doses several times higher than the standard hair-loss dose. The standard hair-loss dose is what randomized trials studied; it produces near-maximal DHT suppression in the scalp. Going higher:

• Has not been shown to give meaningfully better hair-loss outcomes in trials.
• Increases the risk of side effects (including sexual side effects, mood effects, and gynecomastia) without a clinical benefit for hair.
• Higher-dose tablets in the 5-alpha reductase class exist for different indications and a different patient population, but they are not the appropriate dose for treating hair loss.

TeleTest prescribes the standard hair-loss dose only.

Reported side effects, mostly mild and reversible if the medication is stopped:

• Decreased libido (sex drive).
• Erectile dysfunction.
• Decreased ejaculate volume.
• Breast tenderness or enlargement (uncommon).
• Mood changes, including low mood (uncommon, but reported).

Rate estimates vary by study. In randomised clinical trials, sexual side effects occurred in roughly 1-2% of users, with similar rates in the placebo group in many studies. In post-marketing reporting (real-world use), rates are higher.

A small subset of men report sexual side effects that persist after stopping the medication. This has been described in patient advocacy and some clinical literature as a syndrome of persistent post-treatment symptoms.

The clinical and research community is divided on whether this is:

• A real, persistent biological effect in a small subset of users.
• A consequence of separate or coexisting conditions (depression, anxiety, attributional effects).
• Underreporting or reporting bias in either direction.

What we can say:

• The risk, if it exists, is uncommon. Most men who experience side effects find that they resolve after stopping.
• The risk of persistent side effects is real enough that you should understand it before starting.
• If you experience sexual side effects on the medication, stop and consult. Most resolve over weeks.
• Topical options (especially topical 5-alpha reductase inhibitor formulations) have much less systemic exposure and lower risk - they are a reasonable alternative for men particularly concerned about this.

The clinician will discuss your specific risk tolerance and treatment goals in the consultation.

This medication class lowers PSA levels by roughly half on average. That doesn't mean it causes cancer - it means PSA results need to be interpreted differently in someone taking it. If you're over 50 and considering PSA-based screening, mention this to the clinician so they can advise on baseline PSA and how to interpret future results.

Long-running trials in older men taking this medication showed:

• A reduced overall risk of prostate cancer.
• A small increase in detection of higher-grade tumours - though the clinical significance of this is debated and may relate to detection bias rather than true increased risk.

For most men using the medication for hair loss, prostate cancer risk is not a major concern. The clinician can discuss your individual risk based on age, family history, and other factors.

Some patients report mood changes (low mood, anhedonia, reduced motivation) on this medication. The evidence is mixed and the mechanism isn't fully understood. If you have a history of significant depression or are currently depressed, mention this in the intake - the clinician can advise on alternatives or close monitoring.

If mood changes develop on the medication, stop it and discuss with the clinician.

• The medication has not been shown to affect male fertility in most users at the doses used for hair loss. A small subset reports reduced ejaculate volume; in rare cases, semen-parameter changes have been described.
• The medication can affect a developing male fetus - pregnant partners and partners trying to conceive should not handle crushed or broken tablets. Intact-coated tablets are safe to handle. Semen exposure to a pregnant partner has not been shown to be a meaningful risk at standard hair-loss doses.
• If you're actively trying to conceive a child, mention this to the clinician. Some men prefer to stop the oral medication during conception attempts.

• Scalp irritation, itch, dryness, flaking - the most common topical side effects, usually mild and may improve with reduced frequency or a different formulation.
• Unwanted hair growth on the face (with the over-the-counter topical) - rare; can occur if the product runs onto the face. Apply carefully and wash hands after.
• Initial increased shedding in the first 2-8 weeks of starting the topical - this is the "shedding phase" as resting hairs are pushed out to make way for new growth. It's expected and is a sign the medication is working. Continue use.
• Sexual side effects can occur with prescription topical 5-alpha reductase inhibitor formulations, but much less commonly than with the oral form because absorption into the bloodstream is lower.

Hair grows slowly. Realistic timeline:

• Months 1-3: Often an increase in shedding at first as the medication shifts follicles in the hair cycle. Continue treatment - this is expected and is not a sign it's not working.
• Months 3-6: Shedding slows. You may notice less hair coming out in the shower or on your pillow.
• Months 6-12: Visible improvement in hair density and possibly some regrowth, especially at the crown.
• Months 12-24: Maximum effect. Compare photos at this point to assess overall benefit.

Hair regrowth tends to come first to the crown; the frontal hairline is harder to regrow but more often holds steady against further loss.

Treatment is suppressive, not curative. If you stop:

• The hormonal signal causing the loss returns.
• Within 6-12 months, you'll typically lose any treatment-related gains and continue progressing along your natural genetic pattern.
• By 18-24 months off treatment, you'll be at roughly the point you would have been without ever treating.

This is the most important factor to plan for before starting: the benefits last only as long as you take the medication. Many men take treatment for decades.

Probably not, especially if hair loss is advanced. Realistic outcomes:

• Slowed or stopped progression - the most reliable benefit.
• Some regrowth - common at the crown, less common at the hairline.
• Thicker existing hairs - moderately miniaturised follicles can return to fuller hair.
• Completely bald areas - follicles that have fully shut down don't restart. Treatment doesn't grow hair where follicles are gone.

Earlier treatment generally means better results because more follicles are recoverable.

Hair transplantation can be very effective for the right candidate, especially when combined with ongoing medical therapy to preserve non-transplanted hair. Two main techniques (FUT and FUE) are offered by hair-transplant clinics across Canada.

TeleTest doesn't perform transplants. If you're interested, the clinician can advise on whether you're a likely good candidate and what timing makes sense alongside medical therapy. Transplants without ongoing medical therapy are usually a poor long-term plan because the non-transplanted hair continues to thin.

Low-level laser therapy (LLLT) devices are available over the counter and have some evidence of modest benefit. They are an add-on, not a replacement for medical therapy. The clinician can discuss whether it's worth considering for your situation. TeleTest doesn't prescribe these - they are sold direct to consumers.

The over-the-counter topical is approved for women and is the standard first-line treatment for female-pattern hair loss. There is a women's formulation specifically.

The oral 5-alpha reductase inhibitor and prescription topical formulations are not approved for women at standard hair-loss doses. In some specialty settings, off-label use has been described, but TeleTest does not currently prescribe these to women for hair loss.

For women's hair loss, see Hair Loss - General, which covers the broader differential (telogen effluvium, iron deficiency, thyroid issues, female-pattern thinning) and what we can offer.

The medication lowers scalp and serum DHT but does not significantly lower testosterone. The bulk of evidence shows no meaningful effect on muscle growth, strength gains, or athletic performance at the doses used for hair loss.

A different 5-alpha reductase inhibitor (used at one dose for prostate enlargement) is sometimes prescribed off-label for hair loss at a lower dose. TeleTest can discuss off-label use at appropriate doses. TeleTest does not prescribe high off-label doses because the safety profile of higher doses has not been demonstrated to be better and the risk of side effects may be higher.

Once daily, with or without food. Consistency matters more than time of day - pick a time you'll remember.

If you want to keep the hair you save and regrow, yes - benefits last only while you take the medication. Some men cycle on and off, accepting that they'll lose treatment-related gains during off periods. Most who stay on it do so indefinitely.

Initial assessment, then check-in at 3-6 months if you have questions about side effects or progress, and renewal at the end of the prescription. Photos at baseline and 6-12 months are useful for tracking progress - hair changes are gradual and easy to miss day-to-day.

Yes. Many men start with one formulation, assess after several months, and adjust. The clinician can discuss switches in renewal consultations.

• The TeleTest consultation fee for the assessment and prescription. Not covered by provincial health plans.
• The medication at your pharmacy:
  • Generic oral 5-alpha reductase inhibitor is inexpensive - typically under $50 per year for the medication itself, plus pharmacy dispensing fees.
  • Compounded topical formulations are more expensive (varies by pharmacy and formulation).
  • Over-the-counter topical is available at any pharmacy at a few different price points.

Pharmacies vary substantially on price. Independents and warehouse pharmacies (e.g., Costco) are usually cheaper than big chains. See Prescriptions for pharmacy-shopping tips.

Provincial drug plans generally do not cover hair-loss medication (it's classified as cosmetic). Some private plans cover the generic oral medication; many do not. Compounded topicals are usually not covered.