hello.. ‘Welcome to HealthcareMagic Forum’.
can be caused by many factors such as bronchitis
, allergic to certain substances pollution and thyroid too..
get your self investigated for T3,T4, TSH.. to rule out thyroid being the cause.
other than the dry cough are you experiencing any other symptoms like tiredness dry mouth
and skin.. sleepiness.. over eating..
wishing you good health..