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At the Doctor's Office
Patient: Good morning, doctor. Have you seen my mom? She came here to have some tests done.

Doctor: Good morning. If she came here to have a medical checkup, she must be in the laboratory.

Patient: Oh, I see. Well, I suppose I will have to wait for her here in the waiting area.

Doctor: Yeah, it won't take too long. Just wait for her. And what about you? Have you had your annual checkup yet? It is very important to see if everything is fine.

Patient: Um, I suppose so. I come here once a year, doctor. But I don't understand much about these things—about illnesses and diseases.

Doctor: I can help you with that. I have some free time and it's important you know those things.

Patient: Really? For example, what is the most common health problem a person has?

Doctor: That might be a cold. It is a common viral infection which causes mucus to run from the nose. It usually gives a sore throat and often includes sneezing. It's very common.

A cold can be confused with the flu. Flu is the common name given for influenza. It is a contagious viral infection of the respiratory passages that causes fever and severe aching, or a cough. It is the act of expelling air from the lungs with a sudden sharp sound.

Now, another really common condition is an allergy. Do you know what it is?

Patient: Yes, I am allergic to dust. My mother is allergic to cat hair.

Doctor: That's right. It's a medical condition that causes you to react badly or feel sick when you eat or touch a particular substance. In your case, to dust, and in the case of your mother, to cat hair. It's very common.

Another common medical condition is asthma. It is a respiratory condition where spasms in the lungs cause difficulty in breathing. An asthmatic uses an inhaler to calm the spasms.

Now let's go with some aches we usually have:

Backache: A prolonged pain in the back. It usually happens when you sleep in a bad position or when you carry heavy things.

Earache: Pain inside the ear. It is very uncomfortable, and it's important that you go to a doctor if you have an earache.

Headache: A continuous pain in the head, usually because of stress. Some people usually take painkillers for a headache.

Stomach ache: Pain in a person's belly. Sometimes you feel it when you eat something bad.

Toothache: Pain in a tooth, or teeth in plural. Dentists check that.

Sore throat: A condition of pain in the throat, typically caused by inflammation.

Fever: An abnormally high body temperature, usually accompanied by shivering and a headache. Many people don't know, but a high fever can be dangerous. You have to be careful.

Diarrhea: An illness in which feces are discharged from the bowels frequently and in a liquid form. Diarrhea can also be dangerous.

Heartburn: A form of indigestion felt as a burning sensation in the chest. Very uncomfortable. It is caused by acid regurgitation into the esophagus.

Do you know what a rash is? It is a lot of small red spots on the skin that are usually itchy. It usually happens due to intoxication.

When you play soccer, you can get a sprain. It is an injury to a joint in your body—especially your wrist or ankle—caused by suddenly twisting it. It can hurt a lot.

Or even worse, if you are not careful, you can have a broken leg, which really hurts. It is when a bone in the leg is broken. A broken leg is put in a cast to help immobilize the leg so that it heals quicker. Other parts of the body with bones can also be broken, for example, a broken arm, a broken wrist, etc.

Now, if you like going to the beach, you can get a sunburn. If you're careful, there's no problem. But if you spend too much time under the sun's rays, then it can become dangerous when the skin becomes red with inflammation as a result of overexposure to the ultraviolet rays of the sun. That's why it's important to wear sunscreen almost every time you go outside. Remember that.

Oh, I have to tell you the difference between sick and ill: