MSD Manual

Please confirm that you are not located inside the Russian Federation

Yes No
Leave this Site?

The link you have selected will take you to a third-party website. We do not control or have responsibility for the content of any third-party site.

Continue Cancel
honeypot link
Brought to you by
MSD Manual
Consumer Version
The trusted provider of medical information since 1899
VIEW PROFESSIONAL VERSION
VIEW PROFESSIONAL VERSION

Enter search terms to find related medical topics, multimedia and more.

Advanced Search:

• Use “ “ for phrases
o [ “pediatric abdominal pain” ]
• Use – to remove results with certain terms
o [ “abdominal pain” –pediatric ]
• Use OR to account for alternate terms
o [teenager OR adolescent ]

Health Topics & Chapters
Raynaud Syndrome With Cyanosis
44_raynaud_slide_18_springer_high
Raynaud Syndrome With Cyanosis

    The blue areas (cyanosis) at the tips of the fingers are caused by decreased oxygen in the blood because of sluggish blood flow due to partial narrowing of the blood vessels.

© Springer Science+Business Media

In these topics
Raynaud Syndrome Systemic Lupus Erythematosus (SLE) Mixed Connective Tissue Disease (MCTD)

Brought to you by Merck & Co, Inc., Rahway, NJ, USA (known as MSD outside the US and Canada)—dedicated to using leading-edge science to save and improve lives around the world. Learn more about the Merck Manuals and our commitment to Global Medical Knowledge.


Copyright © 2023 Merck & Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved.