And my answer is no dear it is a simple cyst, don't worry and take some simple action like medicines or surgical removal followed by biopsy.
How to decide severity?
It is an important factor that these cysts are specific to some body parts and usually give no symptom except mild discomfort. They are purely a cosmetic issue.
The first question:
It is single or multiple?
The multiple swellings on body are mainly due to Lipoma or neurofibromatosis. Apart from these diseases lymph node swelling may be multiple. The difference is that the Lipomatosis (multiple lipoma) are typically occur on side wall of chest and abdomen, hands and back. The Neurofibroma occurs on entire body and lymphadenitis occur at anatomical site of lymph nodes such as neck, axilla, groin etc.
Post auricular dermoid: