It could be possible that your dog is allergic to the vaccination, or that there are antibodies and immunity that is being built up by the vaccination, and that it will decrease within time. If it by chance does not happen to decrease, then take your dog back to the vet, and they might be able to help you.
Goiter is a swelling in the thyroid gland which is situated in the neck and often causes additional swelling of the neck.
Adult dogs from shelters and rescues can usually be had for the cost of their vaccinations.
Usually, vaccinations will be administered in the scruff of the neck. Occasionally, vaccinations will be given directly into the muscle of the cat (intermuscularly) in the cat's hind leg.
Another common complication is swelling or inflammation of the neck glands.
Swelling from pressure internaly
Its the swelling of the lyphm the swelling occurs in the groin area under the armpits and the neck
Thyroid
Dog should start walking after their vaccinations and when they are 12weeks old
Dogs may lay on your neck as a sign of affection, seeking warmth, or to feel secure and close to you.
on their neck but you can not touch it
commonest is a swelling in front of the neck, which moves when you swallow something .
Certain food or chemical allergies or even animal stings can cause a dog's face and neck to swell up quickly. If the swelling is more gradual it could be due to a disease. A veterinarian will be able to determine the cause as well as what medication should be administered.