Thanks for writing in.
Your symptoms could be due to gastroesophageal reflux disease
. Asthma does not cause changes in the voice. To be able to help you better, I would request you to answer the following questions:
a. What is you profession?
b. Do you have any burning pain in the chest or does this tightness increase on eating certain foods?
Meanwhile, I would suggest that you take steam inhalation, voice rest and consult a physician for a course of proton pump
inhibitors like omeprazole
. This should help overcome your symptoms and make you feel better.
Awaiting your reply