Hi, I got a flu shot a couple days ago. For a few days my arm was very sore (that s usual, I know) but then three days ago I realized my pain moved up to the base of my neck where I know feel a lump under my skin. Is that normal or should I seek Medical Attention for it? If it is normal, how many days do you usually keep it?
Hello, I read carefully your query and understand your concern. Your symptoms seem to be related to a side effect of the shot. I suggest using anti-inflammatory medications such as Acetaminophen to relieve the pain. I also suggest using cold compresses for local application. The symptoms may last for a few days. Hope my answer was helpful. If you have further queries feel free to contact me again. Kind regards!  Chat Doctor.