How to Tell If You Have Thinning Hair? Early Detection and Prevention Tips

Written by Our Editorial Team
Last updated

Noticing more hairs than usual falling out when you wash or brush your hair? Suspecting your ponytail looks thinner or your part is wider? Hair thinning and loss is common, but how can you tell if what you're experiencing is within normal range or a sign of a problem?

How to Tell if You Have Thinning Hair

There are several ways you can identify thinning hair or hair loss:

  • Look for gradual thinning across the top of the scalp or bitemporal recession
  • Notice if your ponytail or braid is thinner than normal
  • Check if your part or crown appears wider
  • See more hairs than usual coming out when brushing or washing
  • Observe reduced hair volume overall

Visible Signs of Thinning Hair

Visible thinning hair can show up in different patterns depending on the cause. Here are some common presentations of thinning hair:

Gradual Diffuse Thinning

This presents as evenly distributed thinning all over the top of the scalp. Often the first noticeable sign is a wider part or feeling like you shed more when brushing or washing. This pattern is typical of female pattern hair loss.

Bitemporal Recession

With this presentation, thinning and receding occurs in the frontal hairline, usually more pronounced at the temples. It develops gradually over time and indicates male pattern baldness.

Thinning Ponytail or Braid

This signals thinning across the mid-to-back part of the scalp. Your ponytail or braid may feel and look less dense than it used to. This can occur with female pattern thinning.

Widening Part or Crown

Early diffuse thinning can cause the hair part or crown area to appear wider than normal. The scalp becomes more visible through the part or at the whorl.

Increase in Shedding

Seeing more hairs than usual in your hairbrush or coming out while shampooing can indicate active shedding and hair follicle cycling. Watch out for shedding episodes lasting longer than 6 weeks, which may signal underlying hair thinning.

Testing Hair Density

To check your overall hair density, try these methods:

  • Ponytail test: Pull hair into a low ponytail and measure its thickness with a piece of string.
  • Close-up photos: Take close-up pictures of thinning areas month-to-month to compare.
  • Hair pull test: Gently pull small sections of hair to count the hairs that come out.
  • Wet test: With clean, wet hair, assess areas of transparency where the scalp shows through.

When to See a Doctor

Make an appointment with your doctor or dermatologist if you notice:

  • Sudden hair shedding in clumps
  • Round bald patches
  • Persistent itchiness or burning on the scalp
  • Hair thinning that starts abruptly

A doctor can diagnose the cause of your hair thinning and offer appropriate treatment options.

What Causes Thinning Hair?

There are a variety of reasons you may be experiencing hair thinning. Common causes include:

Androgenetic Alopecia

This common genetic condition causes hair follicles to shrink over time. In men, it presents as a receding front hairline, while women experience diffuse thinning on top of the head. It can start as early as puberty.

Telogen Effluvium

This refers to excessive daily shedding of hair in the telogen (resting) phase. It may be triggered by pregnancy, major surgery, significant weight loss, stress, or thyroid problems. Hair usually regrows within 6 months.

Nutritional Deficiencies

Lack of nutrients like protein, iron, zinc, and B vitamins can disrupt the hair growth cycle and cause shedding. This is reversible with proper diet and supplementation.


Certain medications like blood thinners, antidepressants, cholesterol drugs, and hormone therapies can trigger excess hair shedding as a side effect. Hair regrows after stopping the medication.

Alopecia Areata

This autoimmune disorder causes patchy hair loss, often starting with smooth, round bald spots on the scalp. More severe cases can progress to complete hair loss.

Thyroid Problems

Both hypothyroidism and hyperthyroidism can lead to thinning hair. Normal regrowth usually returns once thyroid levels are balanced.


Natural hair thinning can occur due to declining hormones, reduced blood flow, and oxidative damage as we age. Gradual thinning usually starts in the 40s and 50s.

When to Seek Treatment

See your doctor promptly if you notice sudden, patchy hair loss or shedding in clumps. This may signal an underlying medical condition. For gradual thinning, treatment may help if it is due to:

  • Androgenetic alopecia
  • Alopecia areata
  • Thyroid dysfunction
  • Nutritional deficiency
  • Medication side effects

Options your doctor may recommend include medicated shampoos, oral medications, supplements, steroid injections, and laser therapy. Early intervention gives the best chance of slowing or reversing thinning hair.

When to Wait and See

You can take a “wait and see” approach if your hair thinning/loss is minor and attributed to:

  • Postpartum hormonal shifts
  • Short-term stress
  • Weight loss
  • Minor nutrient deficiencies
  • Normal aging

Gentle hair care practices, vitamins, reducing stress, and allowing time for hair to regrow on its own may be all that’s needed in temporary cases of thinning.


Noticing more hairs in your brush or a thinner ponytail doesn't necessarily mean there is a serious problem. But consistent thinning over time or sudden patchy loss warrants medical evaluation. Getting an accurate diagnosis and starting treatment early provides the best chance to restore your hair's density and fullness.

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Hair Growth Routine | For Men
Hair Growth Routine | For Men
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Hair Growth Routine | For Women
Formulated to combat thinning hair & visible scalp

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