What would cause a single lymph node to swell on the back of the neck? Could dehydration cause it? I was hospitalized due to passing out due to dehydration. It's been there
![Lymphatic Drainage Massage for Face, Head, & Neck Swelling or Lymphedema - By a Physical Therapist - YouTube Lymphatic Drainage Massage for Face, Head, & Neck Swelling or Lymphedema - By a Physical Therapist - YouTube](https://i.ytimg.com/vi/VQdLZ26r-rU/maxresdefault.jpg)
Lymphatic Drainage Massage for Face, Head, & Neck Swelling or Lymphedema - By a Physical Therapist - YouTube
![Clavicular swelling—classic presentation of chronic non-bacterial osteomyelitis | Archives of Disease in Childhood Clavicular swelling—classic presentation of chronic non-bacterial osteomyelitis | Archives of Disease in Childhood](https://adc.bmj.com/content/archdischild/98/3/238/F1.large.jpg)
Clavicular swelling—classic presentation of chronic non-bacterial osteomyelitis | Archives of Disease in Childhood
![The lymph node near my collar bone swelled up a few days after my covid vaccine. (It moves around if I push it) : r/mildlyinteresting The lymph node near my collar bone swelled up a few days after my covid vaccine. (It moves around if I push it) : r/mildlyinteresting](https://preview.redd.it/4vcnws7eslf71.jpg?auto=webp&s=85298eed70a15d982132caadcdaaddcf0986fe97)
The lymph node near my collar bone swelled up a few days after my covid vaccine. (It moves around if I push it) : r/mildlyinteresting
![Swelling of the right clavicle – the abnormality has not changed in... | Download Scientific Diagram Swelling of the right clavicle – the abnormality has not changed in... | Download Scientific Diagram](https://www.researchgate.net/publication/267932961/figure/fig1/AS:273832883781642@1442298255244/Swelling-of-the-right-clavicle-the-abnormality-has-not-changed-in-appearance-since-the.png)
Swelling of the right clavicle – the abnormality has not changed in... | Download Scientific Diagram
![Preoperative image of supraclavicular cystic mass on the left ( arrows... | Download Scientific Diagram Preoperative image of supraclavicular cystic mass on the left ( arrows... | Download Scientific Diagram](https://www.researchgate.net/profile/Karol-Zelenik/publication/225772895/figure/fig1/AS:302785015894022@1449200981907/Preoperative-image-of-supraclavicular-cystic-mass-on-the-left-arrows-mark-the-swelling_Q640.jpg)