
Big life events such as getting married or moving house.Working night shifts, which may lead to a poor sleep pattern and result in tiredness.Excessive exercise or total lack of exercise.Having an unhealthy, unbalanced diet, including eating too many ultra-processed foods.We often try to cram too much into our lives and as they become more and more busy we can get tired. Stress is a common cause of tiredness, either because it interferes with sleep, or because of the effect of having a worry on your mind all the time. Any cause of a sleep problem will also cause tiredness during the day. Eating disorders can make you feel tired, particularly if you are underweight or overweight. Both anxiety and depression can make you feel very tired. Psychological tiredness is much more common than tiredness caused by a physical problem. Some causes of tiredness (such as anaemia and hypothyroidism) may not cause any other symptoms apart from tiredness. Most physical causes of tiredness will cause other symptoms. Side-effects of some medicines (for example, beta-blockers, medicines to lower cholesterol, some painkillers, some antidepressants).Pain from other medical conditions keeping you awake at night.Breathing problems at night interfering with sleep ( obstructive sleep apnoea).Having to get up in the night a lot to pass urine, due to problems such as an overactive bladder or an enlarged prostate gland.Bowel problems (for example, coeliac disease).

Chest illnesses (including asthma and chronic obstructive pulmonary disease).An underactive thyroid gland ( hypothyroidism).A tendency to be lacking in iron ( anaemia).Tiredness may be due to a wide range of physical illnesses.

What are the causes of tiredness? Physical causes of tiredness It's so common that GPs have an acronym for it. One UK survey of over 15,000 people found that 10-18% of those who replied reported tiredness that lasted for one month or longer, and a study looking at GP databases found that around 1.5% of the population report new tiredness every year. Tiredness that drags on for no apparent reason, however, can be a real problem, and it's incredibly common. A new baby keeping you up at night, having a bit of a cold, a late night out on the town, or (less enjoyably) long hours at work. Less serious causes (from the point of view of outlook) include carbon monoxide poisoning, taking too many painkillers ( medication-overuse headache), disorders of the joints of the jaw ( temporomandibular joint disorders), dental problems and sinus infections ( sinusitis).We have all experienced tiredness (fatigue) at some point. Some of these are more serious than others and would include giant cell arteritis (an inflammation of the arteries that run along the temples), raised blood pressure ( hypertension), brain haemorrhage, brain infections (eg, encephalitis), raised pressure in the fluid of the brain (raised intracranial pressure) and, of course, brain tumours.

The first approach would be to make sure this was not a secondary headache - in other words, a headache with an identifiable cause. Recoverandheal, Head pressure, Brain fog, odd head sensation, feeling detached It feels as if there is a constant cloud over my brain and I never have any mental clarity. I have a mild pressure feeling in the head, it's not painful but it is just very aggravating and feels really strange. I can't imagine what it must be like to have it for two and a half years. Fortunately, it clears up after a few days. It is the first symptom I get when I have flu and it is most frustrating as it stops me working. I know exactly what Recoverandheal means by 'brain fog'.
