MSD Manual
Please confirm that you are a health care professional
Yes
No
honeypot link
MSD
Manual
Professional Version
The trusted provider of medical information since 1899
VIEW CONSUMER VERSION
A
A
A
Deutsch (GERMAN)
ENGLISH
ESPAÑOL (SPANISH)
FRANÇAIS (FRENCH)
Italiano (ITALIAN)
日本語 (JAPANESE)
Português (PORTUGUESE)
РУССКИЙ (RUSSIAN)
中文 (CHINESE)
Tiếng Việt (Vietnamese)
УКРАЇНСЬКИЙ (UKRAINIAN)
VIEW CONSUMER VERSION
Search
Search
A-Z
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
Symptoms
View All Resources
RESOURCES
3D Models
Abbreviations
Audio
Case Studies
Clinical Calculators
Conversion Tables
Figures
Images
Lab Values
Quizzes
Symptoms
Tables
Videos
NEWS
1999 to 2019 Saw Decrease in Cancer Mortality for Blacks in the U.S.
Candidate Biomarkers Identified for Psoriasis Progression
CDC Advisers Recommend Pfizer Booster Shot for Children 5 to 11
CDC: 64.1 Percent of Violent Deaths in 2019 Were Suicides
View All News >
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
Courtesy of
about MSD
MSD careers
research
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
/
Dermatologic Disorders
/
...
/
Approach to the Dermatologic Patient
/
Approach to the Dermatologic Patient
Expand all
Collapse all
Evaluation of the Dermatologic Patient
Dermatologic history
Dermatologic examination
Description of Skin Lesions
Lesion Type (Primary Morphology)
Lesion Configuration (Secondary Morphology)
Texture
Location and Distribution
Color
Other Clinical Signs
Diagnostic Tests for Skin Disorders
Biopsy
Scrapings
Wood light
Tzanck testing
Diascopy
Itching
Pathophysiology
Mediators
Mechanisms
Etiology
Skin disorders
Systemic disorders
Drugs
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Treatment
Skin care
Topical drugs
Systemic drugs
Geriatrics Essentials
Key Points
Urticaria
Pathophysiology
Etiology
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Treatment
Drugs
Angioedema
Geriatrics Essentials
Key Points
Skin Manifestations of Internal Disease
Internal cancer
Endocrinopathies
Gastrointestinal (GI) disorders