People can feel grouchy or irritable from time to time. But, when these moods go on for a long time and become a regular feature of someone’s life, it may be a sign of a mental health issue. Understanding why we’re always in a mood and how to manage it can help people with the condition feel better sooner.

Moods are created by our bodies and brains working in tandem with hormones, neurotransmitters (brain chemicals that carry messages), and other environmental factors. But, it’s our moods and emotions that are most influenced by what happens to us emotionally or socially. Moodiness can be caused by the way we think and react to what’s going on around us, as well as by physical pain, hunger or sleep deprivation. It’s also a factor in many chronic illnesses and can be the result of drug side effects.

Sometimes a person’s mood changes can be a sign of a mental illness like bipolar disorder, depression or seasonal affective disorder. But, rapid mood swings can also be a sign of other health issues, substance abuse or major life changes.

If a friend or loved one’s moodiness is making it hard for them to work, socialise or function, it’s worth chatting with them about their feelings. If they need further support, there are lots of ways to get them help including talking therapies, GPs and phone, email and webchat counselling services. If a person’s mood changes are a sign of a serious medical issue, they should be assessed by a trained healthcare professional.