What your scalp can tell you

Do this

1. 1
   Ask your barber to flag new or changing marks.Why

   Show a doctor.

2. 2
   Pick a barber who cleans tools.Why

   Scaly nape or temple patches: see a doctor.

3. 3

   Over 65 with 'dandruff' that keeps returning? Ask your doctor about a fungus test.

4. 4

   Early thinning? Ask your doctor for a blood pressure, sugar and cholesterol check.

5. 5

   Do not wash less to protect your hairline.

6. 6

   What the science points to: it is possible sore scalps mean less washing.

The numbers behind it

• 1 in 10

  Scalp and neck melanomas were first spotted by a hairdresser, of 128 treated at one hospital. Those patients were 13 years younger.

  Lovasik 2016 ↗

• 37%

  Of 91 reported scalp ringworm cases aged 65 or over were first mistaken for something else; 41% had used steroid cream.

  Valdez-Martinez 2025 ↗

• 3.5x

  Higher odds of metabolic syndrome in people with pattern hair loss, pooling 19 articles and 2,531 people.

  Qiu 2022 ↗

• 18.7x

  Higher odds of frontal fibrosing alopecia with washing once a week or less than daily (115 patients, 112 controls).

  Ko 2025 ↗

For your hair

• Men with short, shaved or thinning hair

  88% of scalp and neck melanomas in the series were in men. Ask your barber to mention anything new.

• Teens with fades

  Of 107 fade-cut ringworm cases, 106 were male. The authors point to disinfection of shaving tools.

• Adults aged 65 and over

  In the reports, 9 in 10 were women and 4 in 10 had used steroid cream. Antifungal tablets cured 91%.

• Early pattern hair loss

  Women, early onset and African ethnicity had the highest metabolic risk. Cholesterol was also less favourable across 19 studies (talk to a doctor).

• Receding front hairline

  With thinning eyebrows, see a dermatologist early: scarring hair loss does not grow back. Washing less may follow a sore hairline (likelihood low to medium).

Myths to ignore

• Myth Washing less protects a thinning hairline.

  Truth Daily washing went with lower odds of frontal fibrosing alopecia; washing once a week or less had 18.7 times the odds, in 227 people.

  Ko 2025 ↗
• Myth Scalp ringworm is a childhood problem.

  Truth Teens with fade cuts and adults aged 65 or over get it too, and in older adults it was often mistaken for dandruff or eczema.

  Valdez-Martinez 2025 ↗
• Myth Early baldness is only about looks.

  Truth Pooled data show more metabolic syndrome in people with pattern hair loss. Worth asking your doctor about a check-up.

  Qiu 2022 ↗
• Myth Only a doctor can spot a scalp melanoma.

  Truth A hairdresser first spotted 1 in 10 scalp and neck melanomas in a hospital series. The authors suggest including hairdressers in early-spotting programmes.

  Lovasik 2016 ↗

Go deeper

• Talking to your barber or stylistA clear brief (lengths, gradient, part, neckline and photos) is professional practice, while the health parts (scalp checks, tool hygiene) have small peer-reviewed support.
• Tinea capitis (scalp ringworm)A fungal infection of scalp skin and hair shafts that mostly affects children but also adults; it needs oral antifungal medicine, and shampoo alone will not cure it.
• Frontal fibrosing alopeciaA scarring hair loss that pulls the front and temple hairline back, often with eyebrow thinning; lost follicles do not return, so treatment aims to stop progression early.
• DHT and pattern hair lossPattern hair loss happens when genetically sensitive scalp follicles respond to the hormone DHT by shrinking a little more with every hair cycle.
• How often to wash your hairYour scalp sets how often you need to wash and your hair lengths set how rarely you can, so the right number depends on your hair type and scalp.