Stress can genuinely cause hair loss, most often through a temporary condition called telogen effluvium, where a shock or a prolonged stressful period pushes many hairs into the shedding phase at once. The reassuring part: stress-related shedding is usually reversible once the trigger passes.
Telogen effluvium can be triggered by emotional stress, a major illness or surgery, rapid weight loss, childbirth, or stopping certain medications. The shedding typically appears two to three months after the trigger, not immediately.
Because the follicles aren't damaged, hair usually recovers once the underlying stress or trigger is resolved — though ongoing stress can prolong it.
For a diagnosis and treatment tailored to you, speak to a GP or dermatologist. A free Hair Score is a useful starting point to understand where you stand.
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