Trouble finding words: causes, red flags and when to get it checked

Word retrieval depends on a network of brain regions that is sensitive to attention, sleep and mood. Struggling for a word occasionally is part of normal ageing and often follows a bad night or a busy day. What matters is whether it is new, getting worse, or accompanied by trouble understanding, reading or writing.

• Tiredness, poor sleep, stress and multitasking.

• Anxiety and depression, which reduce concentration and make word retrieval slower.

• Medicines: anticholinergics, sedatives, some antiepileptics (for example topiramate), antihistamines and opioids.

• Perimenopause and menopause, where many women describe word-finding and memory difficulties.

• Underactive thyroid, low vitamin B12, anaemia and infection such as a urine infection in older people.

• Migraine aura, with temporary speech difficulty lasting under an hour.

• Transient ischaemic attack or stroke, with sudden speech trouble.

• Mild cognitive impairment and dementia, including primary progressive aphasia, with a gradual onset and worsening.

• Brain tumour, head injury or epilepsy, which are less common but important.

Abrupt onset, slurred or jumbled speech, difficulty understanding what others say, new confusion, headache with vomiting, seizure, weakness, personality change, or progressive decline over weeks to months are warning signs.

• Call 999: sudden trouble speaking or understanding, with facial droop, arm weakness or confusion, even if it settles.

• Same-day GP or NHS 111: sudden confusion with fever, new speech difficulty after a head injury, or a first seizure.

• GP within days: word-finding problems that are worsening over weeks, or with new headaches.

• Routine GP: persistent word-finding problems or memory worries lasting months.

Expect questions about onset, progression, sleep, mood, alcohol, medicines, menopause symptoms, head injuries and family history. Often a relative is asked for their view. Examination includes blood pressure, a short cognitive screening test, speech and language assessment, a neurological examination and a check for infection or signs of thyroid disease.

• Blood tests: full blood count, B12, folate, thyroid function, kidney, liver, calcium and glucose.

• Urine test: to exclude infection when confusion is acute.

• Cognitive screening or formal neuropsychological testing.

• MRI or CT brain: for sudden onset, focal signs, progressive decline or suspected structural cause.

• EEG: if seizures or fluctuating episodes are suspected.

Prioritise sleep, treat low mood or anxiety, review alcohol and medicines with your GP, and use simple strategies such as describing the word, pausing, or writing a note. Staying socially and physically active supports brain health. Do not stop prescribed medicines on your own.

The NHS route starts with a GP and may lead to a memory service, neurology or speech and language therapy. Privately, a neurology or memory clinic consultation, cognitive testing and MRI can be booked directly.