Most people suffering from Depression don't realise they have an illness until it starts to affect their everyday live. Often people, friends, family around them realise some thing is wrong. It may be that their behaviour patterns or personality have changed. They may not realise they are acting differently or there may be huge changes in their behaviour, each person can show different signs of Depression. There is a big difference between feeling low and having Depression. Some people are able to hide Depression for years. I often hear people say "I didn't believe in Depression until it happened to me". That is what people with Depression are up against, there is still a stigma over Mental Health Issues and Depression. If people are diagnosed with Depression through the NHS it will be on their medical records for their life time. This can for some people be an issue in itself, causing them to not seek help. Depression is best dealt with sooner rather than later, later treatment can be more difficult.