Healthy retirement
Learning Center
Herd immunity and COVID-19: What you need to know
To protect groups of people over time, it helps to know what level of recovery or vaccination in a population makes it hard for a germ to spread.
Unusual COVID-19 symptoms: What are they?
COVID-19 can cause a wide variety of symptoms, some more common than others. Learn about how COVID-19 can make you feel.
Food poisoning
Learn more about foodborne illnesses that can cause upset stomach, vomiting and diarrhea within hours of eating contaminated food.
Down syndrome
Down syndrome is a genetic disorder caused when abnormal cell division results in extra genetic material from chromosome 21.
MCAD deficiency
This inherited genetic disorder prevents the breakdown of certain fats needed for energy, leading to dangerously low blood sugar levels if not treated.
Scorpion sting
Scorpion stings are painful but rarely life-threatening. Young children and older adults are most at risk of serious complications.
Mesenteric lymphadenitis
This condition involves swollen lymph nodes in the membrane that connects the bowel to the abdominal wall. It usually affects children and teens.
Klippel-Trenaunay syndrome
Main signs of this congenital disorder involve a red birthmark (port-wine stain), vein malformations, and overgrowth of tissues and bones.
Spina bifida
Learn about this condition in which an unborn baby's spine and spinal cord don't form properly. Surgery during pregnancy may be a treatment option.
Restless legs syndrome
Uncomfortable sensations in your legs can interrupt your sleep — making you drag through your day. These therapies calm the restlessness and improve sleep.
Refine Your Search
Type
- All
- Disease (279)
- Article (53)
- TestProcedure (31)
- Answer (28)
- Video (9)
- HealthTip (3)
- FirstAid (1)
- Symptom (1)
Gender
Age
- All
- 03 to 5 years preschool
- 06 to 12 years elementary/preteen
- 13 to 18 years teen
- 19 to 44 younger
- 45 to 64 middle
- 02 months to 2 years infant/toddler
- 00 birth to 01 month newborn
- 65 to 80 older
- 80 and over
- 16 months to 2 years toddler
- 06 to 10 years elementary
- 2 years
- 15 months
- 12 months
- 02 to 15 months infant
- 19 to 28 young adult
- 9 months
- 6 months