Thanks for posting your query,
A mild swelling on the side of the neck could be due to a thyroid
swelling, or a soft tissue
swelling due to an inflammation or lipoma
or just a normal physiological variation.
If there is no pain, change in color of overlying skin, hardness or change in the size of the swelling then there is nothing to worry. You can just ignore the swelling for now.
In case the swelling increases in size or there is pain or local lymph
node swelling then an examination and investigations like FNAC is necessary for proper diagnosis.
I hope this information has been both informative and helpful
You can consult me again directly through my profile http://www.healthcaremagic.com/doctors/dr-saurabh-gupta/64132
Dr Saurabh Gupta