![File:Erythromelalgia episode in foot triggered by dipping it in warm water.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/6/66/Erythromelalgia_episode_in_foot_triggered_by_dipping_it_in_warm_water.jpg/580px-Erythromelalgia_episode_in_foot_triggered_by_dipping_it_in_warm_water.jpg)
Size of this preview: 580 × 600 pixels. Other resolutions: 232 × 240 pixels | 464 × 480 pixels | 743 × 768 pixels | 991 × 1,024 pixels | 1,981 × 2,048 pixels | 4,113 × 4,252 pixels.
Original file (4,113 × 4,252 pixels, file size: 7.55 MB, MIME type: image/jpeg)
![]() | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
DescriptionErythromelalgia episode in foot triggered by dipping it in warm water.jpg |
English: Erythromelalgia (EM), with its painful, burning erythema, is in most cases (some 80–90%) due to an underlying neuropathy that causes the blood vessels to contract and dilate in an abnormal way as well as making the blood flow bypass the capillaries. Even though the erythema is caused by an excessive flush of blood in the affected extremity, the tissues paradoxally suffer from a lack of oxygen and nutrients since the blood does not reach the capillaries. Instead it flows directly from the small arteries (arterioles) through arteriovenous anastomoses directly to the small veins (venules). (Such anastomoses are vessels that directly interconnect arteries and veins, acting as shunts to bypass the capillary beds.) The signals from the ischemic tissues cause the central nervous system to increase the blood flow even further, thus increasing the vicious circle. In the majority of people with EM, the areas affected are the soles of the feet. Inbetween EM episodes, which are often triggered by heat, the skin tends to be cold and cyanotic. The photo shows an EM episode in the foot of a male with a small fiber neuropathy. The EM here affects the sole and the toes and was in this case triggered by exposure to warm water. |
Date | |
Source | Own work |
Author | Minor |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
![]() ![]() |
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
Captions
Add a one-line explanation of what this file represents
Erytromelalgi-episod i fot hos man med tunnfiberneuropati efter att foten doppats i varmt vatten.
Items portrayed in this file
depicts
18 January 2016
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 21:19, 3 February 2024 | ![]() | 4,113 × 4,252 (7.55 MB) | Minor | Uploaded own work with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer | HUAWEI |
---|---|
Camera model | ALE-L21 |
Exposure time | 1/100 sec (0.01) |
F-number | f/2 |
ISO speed rating | 190 |
Date and time of data generation | 19:22, 18 January 2016 |
Lens focal length | 3.79 mm |
Width | 4,160 px |
Height | 2,336 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 01:51, 19 August 2017 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.1 |
Date and time of digitizing | 19:22, 18 January 2016 |
Meaning of each component |
|
Shutter speed | 6.6438 |
APEX aperture | 2 |
APEX brightness | 0 |
Exposure bias | 0 |
Metering mode | Average |
Light source | Daylight |
Flash | Flash fired |
DateTime subseconds | 815605 |
DateTimeOriginal subseconds | 815605 |
DateTimeDigitized subseconds | 815605 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Custom process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 27 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Date metadata was last modified | 03:51, 19 August 2017 |
Unique ID of original document | 1B8388073F4DD316F3938FC5AD9F3F02 |