Face

Rosacea is a common inflammatory condition of the skin of the face that causes redness that looks like a flush or blush.

Hay fever is one of the most common allergies in the UK, affecting between 10-20% of the population.

Lymph nodes are not glands, and this disease features enlargement of lymph nodes.

Cold sores are caused by the herpes simplex virus, which also causes genital herpes.

A cold is an infection that affects the upper respiratory tract - the nose, throat, sinuses (small spaces in the skull behind the eyes and nose), trachea (the main airway that runs to the lungs), larynx (voice box) and bronchial tubes (the airways in the lungs).

Nasal congestion or catarrh is one of the most common problems to affect the nose, and is usually due to infection (particularly the common cold) or allergies such as hay fever.

Acne is a common skin condition that affects the hair follicles and the sebaceous glands in the skin, which secrete an oily substance called sebum.