Headache syndromes, characterised by recurrent headache, are one of the commonest medical complaints of the nervous system and can carry a variety of symptoms affecting quality of life.

Multiple sclerosis (MS) is a chronic neurological disorder that affects the central nervous system (CNS), which includes the brain and spinal cord.

Varicose veins are swollen, enlarged veins. They happen when valves in the veins are damaged and don’t work properly. They can cause symptoms and sometimes serious sores called ulcers.

Acne is a very common skin problem that occurs when pores, commonly on the face, chest and upper back become clogged with sebum, dead skin cells and bacteria.

Acne scarring is a common condition that most commonly affects the skin on the face, shoulders and back, as a result of both severe and mild acne.

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

Mastocytosis is a rare disease of the skin in where mast cells gather in body tissues, such as the skin, internal organs and bones.

Aortic stenosis is a condition of the heart where the aortic valve is smaller or tighter than it should be.

Aspirin/NSAIDs can cause allergic reactions whose symptoms include flushing, itchy rashes (hives) and skin swelling, blocked and runny nose, acute breathlessness/asthma as well as life-threatening anaphylaxis with collapse, loss of consciousness or even death.

Atrial fibrillation (AF) is a heart condition that causes an irregular and abnormally fast heart rate.

An Atrial Septal Defect (ASD) is a hole in the wall that divides the upper chambers of the heart.

Fainting or a blackout is a temporary loss of consciousness.

Rashes are any change we notice on our skin. Rashes can have a wide variety of symptoms and appearances; they might be localised to one area of our body or they may be covering multiple areas.

A cardiac arrest is when your heart suddenly stops pumping blood around your body.

Carotid artery stenosis is a narrowing of large arteries supplying blood in the brain and face.

Most chest pain isn’t usually a sign of anything serious, but there are some underlying heart conditions that can cause chest pain.

Contact allergies, also known as allergic contact dermatitis, are a reaction to substances such as metals, scents and latex. This can cause skin reactions including skin rashes, swelling, itching, and dry skin.

Dandruff or an itchy scalp is the body’s reaction to a sensitivity to or overgrowth of a type of yeast, called Malassezia, that normally lives on the skin.

A drug allergy is an allergic reaction to medication that occurs when the immune system is incorrectly activated by a drug. Vaccine allergy is very rare. It is usually caused by allergy to an excipient in the vaccine, rather than the active ingredient.

Endocarditis is an inflammation of the lining of the heart

Excess shedding is often referred to as telogen effluvium and can be a result of general health issues and stress.

Hyperhidrosis is sweating when your body does not need to cool down. It usually affects body sites with the most sweat glands, such as the armpits, palms, soles and head and neck area.

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

Urticaria (also called “nettle rash” or “hives”) is common and affects 20% of people at some point in their lives. The most common form is called spontaneous urticaria. Spontaneous urticaria is divided into “acute” and “chronic” forms dependent upon whether the episode lasts less than or greater than 6 weeks.

Exercise-induced anaphylaxis is an uncommon, potentially-serious condition in which anaphylaxis occurs during or after physical activity.