If your child has swelling in the neck and into the jaw this is indicative of the mumps and if a rash accompanies the swollen glands, it could be scarlet fever. In either case, a doctor needs to be seen. Ear infections, colds and even small cuts can cause swollen glands as well. Your glands will become swollen and possibly hard when an infection occurs. They may also be sensitive and even painful to touch.
Swollen glands are usually no reason for concern when minor infections are present.
The body is actually doing its job. Persistant swollen glands can be the result of a more serious problem and require medical attention. Cancer of the lymph nodes is another cause of swollen lymph nodes, however, this is unlikely the cause of your swollen lymph nodes because with cancer of the lymph nodes the swelling is slow and painless. There are two types of lymph node cancer. They are Hodgkins and Non-Hodgkins.