Why would I be referred to a neurologist for asthma? I have had reactions to singular, advair, & symbicort that are all the left arm going numb and tingly. With singular also tightness in chest, neck, & shoulders as well as indigestion, & stomach pain. With advair also emotional. With singular emotional as well. It took about 5 to 10 minutes for symptoms to start with taking advar and symbicort. It took 9 to 11 days for symptoms to start with singular.