Anxiety is a feeling of unease. It can range from mild to severe and can include feelings of worry and fear.

Panic is the most severe form of anxiety. During a panic attack, you get a rush of intense mental and physical symptoms. It can come on very quickly and for no apparent reason. A panic attack can be very frightening and distressing.

Generalised anxiety disorder (GAD) is a long-term difficulty that causes you to feel anxious about a wide range of situations and issues. People with GAD feel anxious most days and find it hard to control their worries. Their feelings of anxiety are almost constant and can often affect their daily lives.

Health anxiety (sometimes called hypochondria) is when you spend so much time worrying you're ill, or about getting ill, that it starts to take over your life.

A phobia is an overwhelming and debilitating fear of an object, place, situation, feeling or animal. Phobias are more pronounced than fears. They develop when a person has an exaggerated or unrealistic sense of danger about a situation or object.

Obsessive-compulsive disorder (OCD) is a mental health difficulty in which people have recurring, unwanted thoughts, ideas or sensations (obsessions) that make them feel driven to do something repetitively (compulsions). The repetitive behaviours, such as hand washing, checking on things or cleaning, can significantly interfere with a person’s daily activities and social interactions.

Post-traumatic stress disorder (PTSD) is an anxiety disorder caused by very stressful, frightening or distressing events. Someone with PTSD often relives the traumatic event through nightmares and flashbacks and may experience feelings of isolation, irritability and guilt.

Social anxiety is a long-term and overwhelming fear of social situations. Social anxiety is more than shyness. It's a fear that does not go away and affects everyday activities, self-confidence, relationships and work or school life. It is a common problem that usually starts during the teenage years. It can be very distressing and have a big impact on your life.

Self-esteem is the opinion we have of ourselves. When our self-esteem is low, we tend to see ourselves and our life in a more negative and critical light. We also feel less able to take on the challenges that life throws at us. If you have low self-esteem or confidence, you may hide yourself away from social situations, stop trying new things, and avoid things you find challenging.

Stress is your body's reaction to a challenge or demand. It can come from any event or thought that makes you feel frustrated, angry, or nervous. In short bursts, stress can be positive; it can help you take action, feel more energised and get results. But if you often become overwhelmed by stress, these feelings could become a problem.

Depression is more than simply feeling unhappy or fed up for a few days. Most people go through periods of feeling down, but when you're depressed you feel persistently sad for weeks or months, rather than just a few days. Depression is not a sign of weakness; it is a real illness with real symptoms.

Postnatal depression is a type of depression that many parents experience after having a baby. It's a common problem. It can also affect fathers and partners.

Everyone feels low or down from time to time. Feeling low is common after distressing events or major life changes, but sometimes periods of low mood happen for no obvious reason. You may feel tired, lacking confidence, frustrated, angry and worried.

Having a baby is a big life event. It's natural to experience a range of emotions during pregnancy and after giving birth. But if any difficult feelings start to have a big effect on your day-to-day life, you might be experiencing a perinatal mental health problem.

Life transitions are periods in life involving changes to people’s lifestyle. They might also be a result of important events that make people stop and re-evaluate their life. It is not uncommon for people to struggle to adjust to change, and many find these periods of life highly stressful.

Life transitions or events that people might struggle to adjust to are getting married, becoming a parent, relationship breakups, bereavement or loss, starting university, changing/losing a job, becoming ill, adjusting to the menopause, etc.