Hip
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This is a poll for ME/CFS patients (you), and also optionally for a healthy control person (eg a healthy friend or family member) that you might like to recruit.
The polls asks whether there is soreness or tenderness when you press your fingers or thumb into Perrin's point, a spot located on your left breast around 2 to 3 cm to the left, and 2 to 3 cm above, your left nipple Ref: 1 This corresponds to a distance of around 3.5 cm from the nipple, along a diagonal line (see the diagram).
The tender area may not be exactly in the spot specified, so you may have to feel around this spot, searching for an area of tenderness.
Note that in medical terms, tenderness is where pain or discomfort appear only when an affected area is touched or pressed, and where there is no pain or discomfort when the area is not touched.
Note that the Perrin's point is located in the third intercostal space, which is the area between the third and fourth ribs (counting from the top). So to examine Perrin's point, you want to press your finger or thumb into the flesh between your two ribs, at the given location of Perrin's point.
If you have any soreness or tenderness when gently pressing into your fingers or thumb into your flesh Perrin's point, please vote YES in this poll. If there is no tenderness at Perrin's point, please vote NO in this poll. If you tried to feel the tenderness, but don't feel confident about whether your Perrin's point is tender or not, you can vote NOT SURE (you can change your vote at any time in the future).
Optionally, for this poll you can also recruit a healthy control (eg a healthy friend or family member), and get them to test for soreness and tenderness at their Perrin's point in the same way. If they report tenderness, please answer YES in the healthy control section of this poll, answer NO if they do not report tenderness, or NOT SURE if they don't feel confident about whether their Perrin's point is tender or not.
This testing of a healthy control person is optional, and you don't have to answer this section of the poll. Or if you like, you can answer the poll for yourself (the ME/CFS patient) now, and at a later date, add an answer for the healthy control part of the poll (this poll is set up so that you can change or add to your answers at any time in the future).
Dr Raymond Perrin has found that most ME/CFS patients have tenderness at Perrin's point. An independent study confirmed this, finding that 81% of ME/CFS have tenderness at Perrin's point, but no healthy controls had this tenderness (the study tested 42 ME/CFS patients and 20 healthy controls). Thus this study concluded that as a means to diagnose ME/CFS, the Perrin's point tenderness test had a sensitivity of 81%, and a specificity of 100%.
Dr Perrin thinks that ME/CFS patients have a dysfunction of the lymph system and dysfunction of the lymph's central pump the thoracic duct, with this dysfunction arising from autonomic nervous system problems (the ANS controls the thoracic duct). Perrin thinks that as a result of the dysfunction, toxins carried by the lymph fluid are being pumped back into the breast tissue and into the brain. Ref: 1 You can see in the image above that the top of the thoracic duct routes into the top of the left breast. More info in this post.
Limitations of this poll: it is possible that detecting tenderness at Perrin's point requires appropriate training, and so is a task that cannot be given to untrained ME/CFS patients.
The polls asks whether there is soreness or tenderness when you press your fingers or thumb into Perrin's point, a spot located on your left breast around 2 to 3 cm to the left, and 2 to 3 cm above, your left nipple Ref: 1 This corresponds to a distance of around 3.5 cm from the nipple, along a diagonal line (see the diagram).
The tender area may not be exactly in the spot specified, so you may have to feel around this spot, searching for an area of tenderness.
Note that in medical terms, tenderness is where pain or discomfort appear only when an affected area is touched or pressed, and where there is no pain or discomfort when the area is not touched.
Perrin's Point is Located 2 to 3 cm to the Left,
and 2 to 3 cm Above, the Left Nipple
Note that Perrin's point corresponds to a distance of around 3.5 cm
from the nipple, along a 45 degree diagonal line (line shown in yellow)
When examining your Perrin's point for soreness or tenderness, a good reference for comparison is the corresponding spot on your right breast. If this spot on your right breast is not tender, but your Perrin's point is tender, then that helps confirm the Perrin's point tenderness. But I guess it is also possible that both left and right points will be tender, or that both are tender, but the left is more tender than the right.and 2 to 3 cm Above, the Left Nipple
Note that Perrin's point corresponds to a distance of around 3.5 cm
from the nipple, along a 45 degree diagonal line (line shown in yellow)
Note that the Perrin's point is located in the third intercostal space, which is the area between the third and fourth ribs (counting from the top). So to examine Perrin's point, you want to press your finger or thumb into the flesh between your two ribs, at the given location of Perrin's point.
If you have any soreness or tenderness when gently pressing into your fingers or thumb into your flesh Perrin's point, please vote YES in this poll. If there is no tenderness at Perrin's point, please vote NO in this poll. If you tried to feel the tenderness, but don't feel confident about whether your Perrin's point is tender or not, you can vote NOT SURE (you can change your vote at any time in the future).
Optionally, for this poll you can also recruit a healthy control (eg a healthy friend or family member), and get them to test for soreness and tenderness at their Perrin's point in the same way. If they report tenderness, please answer YES in the healthy control section of this poll, answer NO if they do not report tenderness, or NOT SURE if they don't feel confident about whether their Perrin's point is tender or not.
This testing of a healthy control person is optional, and you don't have to answer this section of the poll. Or if you like, you can answer the poll for yourself (the ME/CFS patient) now, and at a later date, add an answer for the healthy control part of the poll (this poll is set up so that you can change or add to your answers at any time in the future).
Dr Raymond Perrin has found that most ME/CFS patients have tenderness at Perrin's point. An independent study confirmed this, finding that 81% of ME/CFS have tenderness at Perrin's point, but no healthy controls had this tenderness (the study tested 42 ME/CFS patients and 20 healthy controls). Thus this study concluded that as a means to diagnose ME/CFS, the Perrin's point tenderness test had a sensitivity of 81%, and a specificity of 100%.
Dr Perrin thinks that ME/CFS patients have a dysfunction of the lymph system and dysfunction of the lymph's central pump the thoracic duct, with this dysfunction arising from autonomic nervous system problems (the ANS controls the thoracic duct). Perrin thinks that as a result of the dysfunction, toxins carried by the lymph fluid are being pumped back into the breast tissue and into the brain. Ref: 1 You can see in the image above that the top of the thoracic duct routes into the top of the left breast. More info in this post.
Limitations of this poll: it is possible that detecting tenderness at Perrin's point requires appropriate training, and so is a task that cannot be given to untrained ME/CFS patients.
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