one week ago start light headache left temporal area, 2 days later patchy rash appeared on left top of head and spread to small patch in eye brow, headache becoming more sharp and piercing, 4th day noticed swollen bump (large pea size) just forward of left ear lobe and another just below left ear. At first thought rash might be reaction from poison weeds or such while clearing land, but with sharp piercing headache and swelling, I wondering if I should be more concerned?Thank you. Dan