Aerophobia is an extreme fear of flying.

People with aerophobia might feel intense anxiety before or during a flight. This condition can interfere with your ability to travel for work or pleasure.

What is exam stress?

Lots of us know what it's like to feel stressed, but it's not easy to describe what stress is.

There's no single definition of stress, and it might feel different for you than it does for someone else. How we experience stress can feel different at different times. It can also depend on what's causing it.

Feeling stressed, worried, or under pressure around exams can be difficult to manage. But there are things that can help – it's about finding what's right for you.

Erectile dysfunction (ED), also known as impotence, is the inability to get and maintain an erection. Erectile dysfunction is a very common condition, particularly in older men. It is estimated that half of all men between the ages of 40 and 70 will have it to some degree.

Emetophobia is an extreme fear of vomiting, seeing vomit, watching other people vomit, or even feeling sick. It can affect people in lots of different ways.