hello and welcome to HCM,
Let me first mention to you that our body is an island of miracles and anything can happen and you will be amazed. So a swelling in the ear may cause numbness
anywhere in the body.
Having said that let me also mention that only the nerve which gives supply to the muscles of the face is intimately related to the ear (called the facial nerve
) while the nerve of sensation called the trigeminal nerve
is not very close to the ear.
In either case you need to get a complete ENT examination and also undertake an Imaging study to better help you out with your symptoms
take care and get well soon
Dr Sriram Nathan