The four main types of infections are caused by bacteria, viruses, fungi, and parasites, which are microorganisms that invade the body, multiply, and cause illness, though many microbes are beneficial; other less common infectious agents include prions, note Mayo Clinic and Sepsis Alliance. These pathogens spread through contact, contaminated food/water, or airborne droplets, triggering immune responses like fever.
Other infections that can cause rashes include measles and hand, foot, and mouth disease. Bacterial infections like impetigo and cellulitis create red, swollen, and painful rashes on the skin. Most viral rashes result in red or pink bumps, welts, or blotches. They often start in one body part and spread to other areas.
Most infections are caused by germs called viruses and bacteria. While you may be able to keep germs from spreading, you can't always keep your child from getting sick. It is important for parents to know how to keep their children healthy and what to do when they get sick.
Germs that cause infectious diseases include viruses, bacteria, fungi, parasites and, rarely, prions. We all get infectious diseases. You can get them from breathing in germs (like after someone coughs or sneezes), from bug bites, from contaminated food and from the environment around you.
The five common signs of infection, often called the cardinal signs, are redness, swelling, heat, pain, and loss of function at the site of infection, but general signs like fever, fatigue, headache, muscle aches, and swollen lymph nodes also indicate an infection is present, requiring medical attention if severe or persistent, notes Healthline, Medical News Today, Mayo Clinic, and Centers for Disease Control and Prevention | CDC.
Sepsis is a life-threatening medical emergency caused by your body's overwhelming response to an infection. Without urgent treatment, it can lead to tissue damage, organ failure and death.
Upper respiratory infections are among the most frequent childhood illnesses. The common cold, caused by rhinovirus, typically presents with runny nose, cough, and mild fever. More serious respiratory infections include strep throat, influenza, and RSV (Respiratory Syncytial Virus).
When an infection is present in the body, it often triggers changes in the blood. These changes can be detected through different types of blood tests. The most common one is the full blood count (FBC) test, which measures different components of the blood, including white blood cells, red blood cells, and platelets.
Viruses can cause neurological problems due to a number of mechanisms including lytic effects on brain cells (cytomegalovirus), induced apoptosis (vesicular stomatitis virus, VSV), or secondary damage due to release of glutamate, DNA, and other inducers of further brain damage.
Look for red, swollen areas that may feel warm to the touch. Some infections ooze fluid, form yellow crusts, or develop pus-filled bumps. Unlike fungal infections, bacterial infections tend to spread rapidly if untreated.
To stop itching fast, use cold compresses or cool baths, apply moisturizers, mild steroid creams (like hydrocortisone), or calamine lotion, and try anti-itch creams with menthol or pramoxine; avoid scratching by patting the skin and using fragrance-free products. For persistent or severe itching, over-the-counter or prescription oral antihistamines, or seeing a doctor for a proper diagnosis and treatment plan, may be necessary.
Respiratory syncytial virus (RSV) Respiratory syncytial virus (RSV) is one of the most common causes of acute lower respiratory infections in children globally, as well as causing substantial burden of severe respiratory disease among elderly persons.
Common signs of wound infection include increasing pain, spreading redness, foul odor, and pus in the affected area. Severe cases are often accompanied by fever, chills, and fatigue, signaling your immune system is working extra hard.
What happens when your body is full of infections?
Sepsis is a serious condition in which the body responds improperly to an infection. The infection-fighting processes turn on the body, causing the organs to work poorly. Sepsis may progress to septic shock. This is a dramatic drop in blood pressure that can damage the lungs, kidneys, liver and other organs.
The child usually presents with fever and systemic unwellness. Glands may be swollen and a blistery rash is seen in areas of eczematous skin. New blisters continue to appear over a period of 7–10 days while old ones crust over. Superinfection with bacteria is not uncommon and can complicate treatment.
Strains of pathogens that've developed resistance to multiple drugs are the hardest to get rid of. Infections like MRSA and CREs are often resistant to more than one type of antibiotic, so finding one that's effective (or a combination of medications that work together) can be challenging and take a long time.
What is sepsis? Sepsis is your body's most extreme response to an infection. You may hear it called septicemia. This is the medical name for blood poisoning by germs such as bacteria, viruses, and fungi. Sepsis can cause shock (called septic shock) and organ failure, which can be fatal in up to half of cases.
