What is going on with my chick

[EElliott]

My chick has developed a large knot on her head and a swollen bottom. Any idea what is going on and how to fix it?

 

[Candy442]

My chick has developed a large knot on her head and a swollen bottom. Any idea what is going on and how to fix it?View attachment 2565000

I am not sure what is on the head, but you should isolate this chick if you have a group of them. Please remove the feces from the vent area asap. It appears it has dried and plugged up the area badly.