Myth: Only kids get it.

Truth: While for many asthma does start in childhood, some people are diagnosed in their 40s with so called 'adult onset asthma'. Some women experience symptoms for the first time when going through menopause, so experts think there might be a hormonal link.

Myth: It's not that serious.

Truth: Over a third of people with asthma are at high risk of a fatal attack, with 5% of sufferers having symptoms so severe they have difficulty breathing almost all of the time.

Myth: Don't exercise if you have asthma.

Truth: Regular exercise can improve lung function and help you stay slim, which can mean fewer attacks. But if cold air, pollution or pollen trigger your asthma, it's sensible to avoid exercising outside when these factors are present. And always talk to your GP before starting a new fitness programme.

Myth: Asthmatics always wheeze.

Truth: Many sufferers don't wheeze at all. That nagging dry night cough, or a chest cold that won't go away, can also be warning signs of the condition as can coughing in response to cold air.

Myth: You only need an inhaler when you're having an attack.

Truth: Effectively managing asthma isn't just about taking 'relievers' when flare-ups or attacks occur. Patients often need to take 'preventers' on a daily basis to combat chronic inflammation and avoid future attacks.