People’s experience of dizziness varies widely from a general feeling of lightheadedness, faintness or weakness to a more specific sensation of vertigo involving prolonged spinning, which is sometimes referred to as hallucination of movement.

The grommet itself is a small plastic collar which sits in the eardrum and holds a very small hole open, to allow air to move from one side of the eardrum to the other and equalise pressure.

Anaphylaxis is a severe and potentially life-threatening reaction to a trigger such as an allergy.

The severity of insect venom allergy varies from person to person but can range from localised or mild, to life-threatening.

Thread veins are damaged blood vessels that appear under the surface of the skin, often as a result of hormonal changes or injury.

Dr Katie Lacy provides a detailed view on why mole mapping is important, plus a clinical examination for skin cancer surveillance.

Dr Vassiliki Bravis is an experienced Endocrinologist specialising in Type 2 diabetes, cholesterol disorders, metabolic syndrome and polycystic ovarian syndrome. She currently holds an Imperial Health Charity Innovation award, which is supporting work into empowering people with diabetes to self-manage through accessing and using technology.

Vasovagal syncope, or more commonly known as fainting, is a condition that results in loss of consciousness which is usually transient without any prolonged complications, with rapid recovery and a return to normality afterwards. This condition is usually caused by low blood pressure or low heart rate or a combination of both. It is usually triggered by being in an upright position, particularly when there are other factors involved which predispose one to fainting which can include: dehydration, heat, stress, and being stood up in a single position for a long time.

People who faint need to think carefully about what and how much they drink. Think of your body as a water tank with a minimum level needed to feed to brain with blood and oxygen to keep alert and conscious. If the water tank level drops below this minimum level you are “dehydrated”. For people who faint, it is crucially important to keep this tank as full as possible so that even if the level drops (pools due to gravity) into your lower limbs, which can act as large collecting vessels in your legs, there is still enough supply to the brain.

Dr. Vasilis Kouranos is Consultant Respiratory Physician at Here at OneWelbeck as well as Royal Brompton Hospital with expertise in interstitial lung disease and sarcoidosis. He has strong clinical and academic interest in the risk stratification of interstitial lung disease and sarcoidosis.