Chickenpox
Chickenpox, also called varicella, is a very contagious viral infection that causes an itchy blister-like rash and can sometimes lead to serious illness in higher-risk people.
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Mumps
Mumps is a contagious viral disease that can cause fever, swollen salivary glands, jaw pain, and occasional complications involving the testicles, ovaries, pancreas, brain, or hearing.
Rubella
Rubella is a contagious viral infection that is often mild in children and adults but can cause severe birth defects if infection occurs during pregnancy.
Measles
Measles is a highly contagious viral disease that spreads through the air and can cause fever, cough, rash, pneumonia, brain inflammation, and other serious complications.
Tuberculosis
Tuberculosis is an infectious disease caused by Mycobacterium tuberculosis bacteria that most often affects the lungs and spreads through the air.
Respiratory syncytial virus
Respiratory syncytial virus, or RSV, is a common respiratory virus that usually causes cold-like illness but can lead to serious lung infection in infants, older adults, and higher-risk people.
Influenza
Influenza, often called flu, is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs.
Pneumonia
Pneumonia is an infection in one or both lungs that inflames the air sacs, which may fill with fluid or pus and make breathing harder.
COPD
COPD is a chronic lung disease that makes it hard to move air in and out of the lungs, often because of long-term airway inflammation, mucus, and damage to air sacs.
Chronic kidney disease
Chronic kidney disease is long-term kidney damage or reduced kidney function that can make it harder for the body to filter blood, balance fluids, and remove waste.
Heart disease
Heart disease is a group of conditions that affect the heart, including coronary heart disease, where narrowed arteries can reduce blood flow to the heart muscle.
Cholesterol
Cholesterol is a waxy fat-like substance the body needs, but unhealthy blood cholesterol levels can raise the risk of plaque buildup, heart disease, and stroke.
Diabetes
Diabetes is a chronic condition in which the body does not make enough insulin or cannot use insulin well, causing too much glucose to stay in the bloodstream.
High blood pressure
High blood pressure, or hypertension, means the force of blood against artery walls stays high enough over time to raise the risk of stroke, heart disease, kidney disease, and other problems.
Stroke
A stroke is a medical emergency in which blood flow to part of the brain is blocked or a blood vessel breaks, causing brain cells to lose oxygen and nutrients.
Multiple sclerosis
Multiple sclerosis is a chronic disease of the central nervous system in which immune-driven damage to myelin can disrupt signals between the brain, spinal cord, and body.
Lupus
Lupus is a chronic autoimmune disease that can cause inflammation in the skin, joints, kidneys, blood, brain, heart, lungs, and other parts of the body.
Rheumatoid arthritis
Rheumatoid arthritis is a chronic autoimmune disease that inflames joints and can also affect energy, organs, mobility, and long-term function.
Osteoarthritis
Osteoarthritis is the most common form of arthritis, a joint disease that can cause pain, stiffness, swelling, and reduced movement as joint tissues change over time.
Psoriatic arthritis
Psoriatic arthritis is an inflammatory joint disease associated with psoriasis that can affect joints, tendons, nails, the spine, and daily movement.
Psoriasis
Psoriasis is a chronic immune-mediated disease that speeds up skin cell growth, causing recurring patches that may itch, hurt, scale, crack, or bleed.
Eczema
Eczema is a group of inflammatory skin conditions, often used for atopic dermatitis, that can cause dry, itchy, irritated, and recurring rashes.
Anaphylaxis
Anaphylaxis is a sudden, severe allergic reaction that can affect breathing, circulation, skin, and digestion and requires urgent emergency response.
Allergies
Allergies happen when the immune system reacts to a substance that is usually harmless, causing symptoms that can range from mild irritation to life-threatening anaphylaxis.