honeypot link
Merck Manual
Please confirm that you are a health care professional
Yes
No
Merck
Manual
Professional Version
The trusted provider of medical information since 1899
ENGLISH
ESPAÑOL (SPANISH)
Other Languages
Search
Search
A-Z
VIEW CONSUMER VERSION
HOME
MEDICAL TOPICS
Common Health Topics
Cardiovascular Disorders
Clinical Pharmacology
Critical Care Medicine
Dental Disorders
Dermatologic Disorders
Ear, Nose, and Throat Disorders
Endocrine and Metabolic Disorders
Eye Disorders
Gastrointestinal Disorders
Genitourinary Disorders
Geriatrics
Gynecology and Obstetrics
Hematology and Oncology
Hepatic and Biliary Disorders
Immunology; Allergic Disorders
Infectious Diseases
Injuries; Poisoning
Musculoskeletal and Connective Tissue Disorders
Neurologic Disorders
Nutritional Disorders
Pediatrics
Psychiatric Disorders
Pulmonary Disorders
Special Subjects
Resources
Videos
Figures
Images
Quizzes
View All Resources
RESOURCES
3D Models
Abbreviations
Lab Tests
Audio
Case Studies
Clinical Calculators
Conversion Tables
Figures
Images
Lab Values
Podcasts
Quizzes
Tables
Videos
DRUG INFO
Drugs by Name, Generic and Brand
Pill Identifier
Commonly Searched Drugs
Albuterol
FLUoxetine
Heparin
MetFORMIN
Doxycycline
Omeprazole
NEWS
Physician's Briefing Weekly Coronavirus Roundup
2014 to 2019 Saw Increase in Prevalence of Autism in U.S. Children
AI Algorithm May Differentiate Polyps on CT Colonography
Ambulatory Function Poorer for Older Cancer Survivors
View All News >
View All News >
PROCEDURES
The Vaginal Exam in Labor
Uterine Compression
Uterine Balloon Tamponade
View All Procedures >
View All Procedures >
QUIZZES & CASES
Quizzes
More Quizzes
Cases
More Case Studies
ABOUT
Overview
History
Editors and the Editorial Process
Publishing and Production Staff
Editorial Board
Contributors
Reviewers
Content Providers
Global Medical Knowledge
FAQ
Contact Us
Medical Topics & Chapters
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Professional
/
Cardiovascular Disorders
/
...
/
Symptoms of Cardiovascular Disorders
/
Symptoms of Cardiovascular Disorders
Expand all
Collapse all
Chest Pain
Pathophysiology
Etiology
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Diagnosis reference
Treatment
Geriatrics Essentials
Key Points
Edema
Pathophysiology
Etiology
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Treatment
Geriatrics Essentials
Key Points
Limb Pain
Etiology
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Treatment
Key Points
Orthostatic Hypotension
Postural orthostatic tachycardia syndrome (POTS)
Pathophysiology
Etiology
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Treatment
Nondrug treatment
Drug treatment
Geriatrics Essentials
Key Points
More Information
Palpitations
Pathophysiology
Etiology
Causes of arrhythmias
Consequences
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Treatment
Geriatrics Essentials
Key Points
Syncope
Pathophysiology
Insufficient cerebral blood flow
Insufficient cerebral substrate
Etiology
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Treatment
Geriatrics Essentials
Key Points
More Information