go to the doctor. if it is a cyst it will need to be removed usually a simple surgery in office because draining it if you are able will only fill back up. the doctor will most likely prescribe antibiotics to help deal with the infection. it can affect his sinuses his vision and even cause dental pain. but a doctor is definitely needed. if it is that large i would imagine it is causing him distress in social situations as well.
my son has a huge acne cyst in his upper check that has swollen up into his eye area. what should be done? . pain is radiating from cyst up to the inside corner of eye. hurts to blink eye. does the cyst need to be drained?