The NHS website

Antiphospholipid syndrome (APS) - Causes

Antiphospholipid syndrome (APS) is caused by the body’s immune system producing abnormal antibodies called antiphospholipid antibodies.

Read about complications of ankylosing spondylitis (AS), which can affect many parts of your body.

The genetic alteration that causes androgen insensitivity syndrome means the body cannot respond to testosterone properly.

Find out what anal cancer is, including which parts of the body are affected.

Alcohol is a powerful chemical that can have a wide range of adverse effects on almost every part of your body.

Advice on how to encourage communication with people with dementia, including body language and physical contact, and active listening.

Read about how X-rays work, why they're used, what happens before, during and after an X-ray, and what the risks are.

Find out about common vitamins and minerals, including what they do, how much you need, and how to ensure you get enough.

Find out about typhoid fever, what causes it, how it's treated and what you can do to protect yourself if you're travelling to a high-risk area.

Tics are unintentional, fast and repetitive muscle movements. Find out how long they last, when to get medical advice and how they can be treated.