disturbed sleep (for example, finding it hard to fall asleep at night or waking up very early in the morning)
Social symptoms include:
not doing well at work
taking part in fewer social activities and avoiding contact with friends
neglecting your hobbies and interests
having difficulties in your home and family life
Depression can come on gradually, so it can be difficult to notice something is wrong. Many people continue to try to cope with their symptoms without realising they are ill. It can take a friend or family member to suggest something is wrong.
Doctors describe depression by how serious it is:
mild depression has some impact on your daily life
moderate depression has a significant impact on your daily life
severe depression makes it almost impossible to get through daily life – a few people with severe depression may have psychotic symptoms
Grief and depression
It can be hard to distinguish between grief and depression. They share many of the same characteristics, but there are important differences between them.
Grief is an entirely natural response to a loss, while depression is an illness.
People who are grieving find their feelings of loss and sadness come and go, but they're still able to enjoy things and look forward to the future.
In contrast, people who are depressed have a constant feeling of sadness. They don't enjoy anything and find it hard to be positive about the future.
There are different types of depression, and some conditions where depression may be one of the symptoms. These include:
Postnatal depression. Some women develop depression after having a baby. Postnatal depression is treated in similar ways to other forms of depression, with talking therapies and antidepressant medicines.
Bipolar disorder is also known as "manic depression". It's where there are spells of depression and excessively high mood (mania). The depression symptoms are similar to clinical depression, but the bouts of mania can include harmful behaviour such as gambling, going on spending sprees and having unsafe sex.