Hi well come to HCM.
Both could be of same origin in conditions like gastric reflux
dis order. this acid
from stomach comes to oesophagus causing substernal pain as well and if very severe
can go right upto throat.It could be because of stress,anxiety
chewing,excess spicy food or junk food and sleep disturbances as well.So correct all
this if you have any and drug like PPI pentoprazole,rabiprazole with prokinetc drugs
can help in severe case you may add some antacid to it.