Dear Concerned., Thanks for writing to us. In all likelyhood you may be developing temporal arteritis / Giant Cell Arteritis / Horton s disease . The arteritis may affect any medium sized artery in the body but usually the branches of External Carotid Artery are involved. The condition may also be associated with other Co-Morbid conditions such as SLE//Polymyalgia// Pathologically there will be inflammation and thickening in Tunica Media of the invoved artery with consequent decrease in the luminal size leading to at times pressure build up and consequently your feeling of dizzyness and pressure in the chest. The investigations usually involve Ultrasonography//routine examination of Hemogram(Increased ESR/CRP)//LFT-raised Alk Phosphotase//Biopsy of involved segment of the Artery//. Treatment Options ;The doctor may start with antinflammatory such as Aspirin and may also consider a tapering dose of Prednisolone for 02 to 04 weeks. The above are all probabalities.Your diagnosis has not been established. Left untreated the condition may lead to ballooning of involved artery due to weakness developing and this leads to Aneurysm formation in the long run. Preventive Measures;-By controlling the symptoms you can prevent the long term complications of Temporal Arteritis.There is no known prevention of arteritis from occuring. Kindly get yourself investigated and treated. Wishing you all the very best. Regards, Dr Lt Cdr ASN Bhushan.