Many things can affect how your body responds to a symptom and what kind of care you may need. These include:

• Your age. Babies and older adults tend to get sicker quicker.
• Your overall health. If you have a condition such as diabetes, HIV, cancer, or heart disease, you may need to pay closer attention to certain symptoms and seek care sooner.
• Medicines you take. Certain medicines, such as blood thinners (anticoagulants), medicines that suppress the immune system like steroids or chemotherapy, or natural health products can cause symptoms or make them worse.
• Recent health events, such as surgery or injury. These kinds of events can cause symptoms afterwards or make them more serious.
• Your health habits and lifestyle, such as eating and exercise habits, smoking, alcohol or drug use, sexual history, and travel.

To stop a nosebleed:

• Gently blow your nose to clear any clots.
• Sit up straight, and tip your head slightly forward. (Do not tilt your head back. This may cause blood to run down your throat and make you vomit.)
• Pinch the front, soft part of your nose shut with your thumb and index finger for at least 15 minutes.
• After 15 minutes, check to see if your nose is still bleeding. If it is, pinch it shut for 10 to 15 more minutes. Most nosebleeds will stop after 10 to 20 minutes of pressure.

Symptoms of difficulty breathing can range from mild to severe. For example:

• You may feel a little out of breath but still be able to talk (mild difficulty breathing), or you may be so out of breath that you cannot talk at all (severe difficulty breathing).
• It may be getting hard to breathe with activity (mild difficulty breathing), or you may have to work very hard to breathe even when you're at rest (severe difficulty breathing).

Severe trouble breathing means:

• You cannot talk at all.
• You have to work very hard to breathe.
• You feel like you can't get enough air.
• You do not feel alert or cannot think clearly.

Moderate trouble breathing means:

• It's hard to talk in full sentences.
• It's hard to breathe with activity.

Mild trouble breathing means:

• You feel a little out of breath but can still talk.
• It's becoming hard to breathe with activity.

Severe trouble breathing means:

• The child cannot eat or talk because he or she is breathing so hard.
• The child's nostrils are flaring and the belly is moving in and out with every breath.
• The child seems to be tiring out.
• The child seems very sleepy or confused.

Moderate trouble breathing means:

• The child is breathing a lot faster than usual.
• The child has to take breaks from eating or talking to breathe.
• The nostrils flare or the belly moves in and out at times when the child breathes.

Mild trouble breathing means:

• The child is breathing a little faster than usual.
• The child seems a little out of breath but can still eat or talk.

A nosebleed is severe if:

• You have moderate to large amounts of blood even after you have pinched the nose shut for 10 minutes.
• Your nose is still bleeding even after 15 full minutes of direct pressure.

A nosebleed is moderate if:

• You have some bleeding, but direct pressure stops it within 15 minutes.
• The nose bleeds small amounts of blood more than 3 times in 24 hours.

A nosebleed is mild if:

• You have a little bleeding, but direct pressure stops it within 10 minutes.
• The nose bleeds no more than 3 times in 24 hours, and each time the bleeding is mild.

Shock is a life-threatening condition that may quickly occur after a sudden illness or injury.

Adults and older children often have several symptoms of shock. These include:

• Passing out (losing consciousness).
• Feeling very dizzy or light-headed, like you may pass out.
• Feeling very weak or having trouble standing.
• Not feeling alert or able to think clearly. You may be confused, restless, fearful, or unable to respond to questions.

Shock is a life-threatening condition that may occur quickly after a sudden illness or injury.

Babies and young children often have several symptoms of shock. These include:

• Passing out (losing consciousness).
• Being very sleepy or hard to wake up.
• Not responding when being touched or talked to.
• Breathing much faster than usual.
• Acting confused. The child may not know where he or she is.

Abnormal bleeding means any heavy or frequent bleeding or any bleeding that is not normal for you. Examples of abnormal bleeding include:

• Nosebleeds.
• Vaginal bleeding that is different (heavier, more frequent, at a different time of month) than what you are used to.
• Rectal bleeding and bloody stools.
• Bloody or pink urine.
• Gums that bleed easily when you eat or gently brush your teeth.

When you have abnormal bleeding in one area of your body, it's important to think about whether you have been bleeding anywhere else. This can be a symptom of a more serious health problem.