Hello and welcome. I wouldn t really worry, as the temple is a region quite sensitive to acne and infection or inflammation of a hair follicle causing a small abscess like swelling, this usually is painful and subsides on its own or with the help of lukewarm compresses, at times antibiotic therapy and very rarely requires surgical drainage. But I would also like to raise caution, if at all you are a woman and are above 50-years of age, it would be best to visit your doctor for a more elaborate evaluation and further treatment. Temporal arteritis may need ruling out. in the meantime, keep the area clean and dry at all times, and do not touch it or try to pop it. Best wishes.