A blister is a small pocket of fluid in the upper skin layers caused by injury, pressure or inflammation. Blisters generally should not be popped or burst, as this can lead to infection.
Chickenpox is a highly contagious viral disease where the main symptom is a blistering skin rash. Chickenpox is most common in children and babies and can be dangerous in adults. A vaccine is available.
Cold sores are a skin infection caused by the herpes simplex virus. They are painful or itchy fluid-filled blisters on the lips and face. Cold sores are highly contagious.
Colds, coughs and flu
Colds are very common, especially during winter. Most colds are caused by a virus and can be easily managed at home with over-the-counter medications and home remedies. Influenza (flu) is more serious and a vaccine is available.
Conjunctivitis is an eye infection caused by bacteria or a virus.
Constipation is when you have hard, dry bowel motions (poo).
Clinical depression is different from when we feel sad or moody. Feelings of disappointment or loss affect everyone sometimes but depression can last a long time and have serious consequences.
Fever is a rise in body temperature, usually caused by infection. Normal body temperature is around 37°C but can vary. A mild fever (up to 39°C) can help the immune system to get rid of the infection. Most cases of mild fever resolve by themselves within a couple of days.
Gastroenteritis is an illness triggered by the infection and inflammation of the digestive system. Symptoms include abdominal cramps, diarrhoea and vomiting. Some of the causes include viruses, bacteria, bacterial toxins, parasites, particular chemicals and certain drugs.
Glandular fever is a viral infection that causes a disease similar to influenza. It is a serious condition and very contagious.
Hay fever is a common condition where irritating particles in the air cause allergic reactions of the nose, throat and eyes.
Headaches have many causes but the most common are tension, stress, migraine and dehydration.
Hives is a red, itchy, raised skin rash, which can look like a group of mosquito bites.
Late or missing periods
A late period is five or more days overdue according to your usual menstrual cycle. A missed period is when there is no flow for six or more weeks from the last period.
Some women have very painful periods, possibly because the uterus works too hard to expel the menstrual blood.
Having sex does not guarantee you will catch a sexually transmissible infection (STI). But certain types of sex put you at a far greater risk.
Sore throats can be caused by an inflammation of your tonsils. They can also be from damage and inflammation to the throat wall caused by coughing and sneezing.
Sports injuries are caused by overuse, direct impact or too much force for the injured body part to withstand.
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