Eating a hard night

I used to like hard chestnuts.

 

I ate it frequently.

 

One day, I ate and went to sleep right away.

 

I couldn't digest my food and my throat hurt.

 

Unable to even swallow rice.

 

I went to the hospital because I couldn't swallow water properly.

 

They said I have esophagitis.

 

I recovered after taking medicine, but sometimes I still get sick.