How much hair loss is normal?
Losing some hairs every day is entirely normal — hair grows in cycles, and at any time a portion is naturally shedding to make way for new growth. What matters is a noticeable change: more hair than usual on your pillow, in the shower or brush; visible thinning; a widening part; or a receding or changing hairline. A change in your normal pattern is the signal worth paying attention to.
The common causes, explained simply
- Genetic (pattern) hair loss— the most common cause; gradual and progressive
- Hormonal changes— thyroid problems, PCOS, postpartum, menopause
- Stress or illness— can trigger temporary shedding a few months later (telogen effluvium)
- Nutritional deficiencies— such as low iron or vitamin D
- Medications and medical conditions Hair practices— tight styles, harsh treatments Often it's a combination, which is why self-diagnosis is unreliable.
Could it be temporary?
Quite possibly. Stress, illness, childbirth, crash dieting or a deficiency can cause temporary shedding that often recovers once the trigger is addressed — this type of shedding is usually diffuse and self-limiting. Genetic hair loss, by contrast, is progressive and benefits from earlier intervention. Telling temporary from progressive is one of the main reasons to get assessed rather than guess.
When should you see a doctor?
It's worth booking an assessment if you notice: a sudden or significant increase in shedding, visible thinning or a changing hairline, hair loss with other symptoms (fatigue, changes in periods, skin/nail changes), patchy loss, or scalp symptoms. Early assessment helps because some causes are very treatable, and progressive loss responds better to earlier action. Even for reassurance, it's worthwhile. See our hair loss appointment.
What will a doctor do?
A dermatologist will take a history, examine your scalp and hair, and may arrange blood tests to check for hormonal or nutritional causes. The goal is a clear diagnosis, which then guides a targeted plan — rather than trying random products and hoping. Understanding the why is what makes treatment effective. Individual results vary.