Health Topics A–Z
For each health topic, you’ll find a “Basics” version, which provides essential facts, and an “In-Depth” version, which provides more details. All of our health topic pages may be downloaded as a PDF, and can be printed or shared with others. Please note that this information is not intended to answer specific questions about a particular problem or condition. It should not be used for diagnostic or treatment purposes.
Health Topics by Category
Arthritis and Rheumatic Diseases
Arthritis is often used to refer to any disorder that affects the joints. Rheumatic diseases usually affect joints, tendons, ligaments, bones, and muscles.
Muscle and Bone Diseases
The musculoskeletal system consists of the body's bones, muscles, tendons, ligaments, joints, and cartilage.
Skin Diseases
Allergies, irritants, genetic makeup, certain diseases, and immune system problems can cause skin conditions.Initiatives and Resources
Portal en español
Find free health information on conditions of the bones, joints, muscles, and skin.
Community Outreach
Get the toolkit and free resources to help spread the word.
Asian Language Resources
Find free resources about bones, joints, muscles, and skin.
Kids Pages
Childhood and teen years are a prime time to learn habits that will help you keep your bones, joints, muscles, and skin healthy.Explore NIH Patient Resources
MedlinePlus:
Find trusted information on health, wellness, and more in both English and Spanish (Español).
Pillbox:
Identify unknown pills and get links to the drug label, safety information, and more.
Explore NIH Research
ClinicalTrials.gov:
Find federally and privately supported research using volunteers.
PubMed Central:
Search the archive of life sciences journals.
Research Portfolio Online Research Tools (RePORT)
Search research projects and follow links to research spending and other reports.
View/Download/Order Publications
Many of our publications are available to view and download. You can also order some in print. Search our publications catalog.