Why is my hair thinning on one part of my head?

Author: Kayden Mitchell  |  Last update: Thursday, June 5, 2025

Genetics, stress, and sickness are just a few of the numerous potential reasons why someone could lose hair on one side of their head. However, issues including irregular hair development, hormonal imbalances, and inflamed scalp can also be some of the most prevalent causes of losing hair side of the head.

Why is my hair thinning in one spot?

Hair loss due to telogen effluvium usually affects less than 50% of the scalp and does not follow a typical pattern, so it is possible for thinning hair to appear on one side of the scalp [4], usually due to variations in hair growth patterns or scalp circulation.

Why is my hair thinning on one side of my head?

One-sided hair loss: Also known as unilateral alopecia, can be caused by various factors. Common causes: trichotillomania, age-related hair loss, scalp conditions, trauma, alopecia areata, telogen effluvium, scarring alopecia, and traction alopecia.

How do I stop my hair from parting thinning?

Not scrubbing too hard when washing your hair especially around the parting, to avoid the pulling and breakage of hair strands. Putting sunscreen on your parting or wearing a hat on hot, sunny days can reduce summer hair loss. Avoiding heat styling can prevent damaged hair which breaks easily.

Can hair grow back after thinning?

You might be able to reverse hair loss, or at least slow it. With some conditions, such as patchy hair loss (alopecia areata), hair may regrow without treatment within a year. Treatments for hair loss include medications and surgery.

The Shocking Truth about Hair Loss on One Side of the Head | Wellaholic

Can thin hair become thick again?

Yes, absolutely! Stress, excessive heat styling, age and even genetics can deplete your hair's thickness. Keeping your scalp and roots healthy is how you can promote the growth of thick hair. You can do the same by oiling regularly, refraining from wearing tight hairstyles and following a nourishing hair care routine.

What does stress hair loss look like?

No Visible Pattern. With stress-related shedding, hair falls out evenly all over your scalp instead of in a defined pattern. You'll likely notice more hairs than usual coming out while shampooing, combing, or on your pillow, clothing, and bathroom floor.

Should I cut off my thinning hair?

The short answer is no, you cannot affect the hair growth cycle by shaving or cutting hair prior to or after hair loss. This question is one that causes a lot of concern and miss- understanding. At Cancer Hair Care we often have people contact us who are really worried about causing a problem to future hair growth.

What does thyroid hair loss look like?

Severe and prolonged hypothyroidism and hyperthyroidism can cause loss of hair. The loss is diffuse and involves the entire scalp rather than discrete areas. The hair appears uniformly sparse.

How to regrow hair on a bald spot fast?

Table of Contents
  1. Stimulate Scalp Circulation for Faster Hair Growth.
  2. Topical Treatments to Regrow Hair on Bald Spots.
  3. Ensure Your Diet Supports Hair Regrowth.
  4. Medical Treatments for Bald Spots.
  5. Manage Stress and Improve Overall Wellness.
  6. Avoid Damaging Hair Practices.
  7. Stay consistent and patient.

What is the best shampoo for thinning hair?

Top shampoos for thinning hair, at a glance
  • Best Overall: Nizoral Anti-Dandruff Shampoo, $15.
  • Best for Thickening: Kérastase Densifique Thickening Shampoo, $44.
  • Best for Damaged Hair: Vegamour Hydr-8 Shampoo, $38.
  • Best for Volume: Bumble and Bumble Thickening Volume Shampoo, $37.

Can sleeping on one side cause hair thinning?

Pressure on Hair Roots: Sleeping consistently on the same side can cause constant pressure on the hair follicles and scalp in a certain direction. This can contribute to weakened hair follicles and hair loss.

Which deficiency causes hair fall?

Only riboflavin, biotin, folate, and vitamin B12 deficiencies have been associated with hair loss. Vitamin B2 (riboflavin) is a component of two important coenzymes: flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) [22].

What is hair thinning 1st stage?

Stage 1: There's little or no hair loss or hairline recession. Stage 2: There's slight hair loss near the skin between your ears and forehead (temples). Stage 3: You have deep hairline recession around your temples, and your hairline may have an “M” or “U” shape.

What are signs that your thyroid is out of whack?

Symptoms
  • Tiredness.
  • More sensitivity to cold.
  • Constipation.
  • Dry skin.
  • Weight gain.
  • Puffy face.
  • Hoarse voice.
  • Coarse hair and skin.

What is Hashimoto's hair loss?

In Hashimoto's disease this hair loss most commonly presents in the form of diffuse hair loss across the scalp and eyebrows. Additionally, the reduced functionality of the T3 and T4 hormone reduces overall sebum production, which can give a thin, brittle appearance to your hair.

What is a thyroid belly?

A common symptom of an underactive thyroid is weight gain, often around the abdomen. However, the American Thyroid Association states that the weight gain may not necessarily be due to the build up of fat, but the accumulation of salt and water.

Why is my hair so thin I can see my scalp?

A visible scalp through your hair can be a sign that it's thinning (but not always). The factors that contribute to thinning hair (and thus a visible scalp) include stress, diet, vitamin deficiency and ageing.

Why is my hair falling out on one side of my head?

Genetics, stress, and sickness are just a few of the numerous potential reasons why someone could lose hair on one side of their head. However, issues including irregular hair development, hormonal imbalances, and inflamed scalp can also be some of the most prevalent causes of losing hair side of the head.

Can hair thinning be reversed?

Thinning of hair isn't always permanent. With proper care, lifestyle changes, and sometimes medical intervention, it's possible to reverse or slow down hair thinning and promote regrowth.

Can lack of sleep cause hair loss?

Quality sleep is as vital for healthy hair as it is for overall health. When we don't sleep enough, it can throw off the levels of certain hormones that help our hair grow, such as oestrogen and melatonin. People experiencing regular poor sleep tend to notice more hair shedding and thinning.

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