Hi ! Good morning. I am Dr Shareef answering your query. The lump on your head might not be responsible for the blurred vision which might possibly be related to your migraine attacks. If I were your doctor, after a clinical assessment of the lump, I might refer you to a surgeon for a possible FNAC/excision biopsy the lump to have a definitive diagnosis, which might prove to be therapeutic as well depending on the report. For your dizziness and blurred vision, I would refer you to an ophthalmologist for a clinical assessment of your eyes with related investigations if considered necessary. At the same time, you should continue the treatment for migraine if any at present. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. I wish you an early recovery. Dr Shareef.