Dark, hard and bumpy spot on my son’s arm

Krissia • First time pregnant with a boy 💙💙💙

Hello,

A couple of days ago I took my son to the park and last night I noticed he had this spot on his arm it was just red and since he was a baby we’ve been dealing with eczema and really sensitive skin so I applied some of his cream on it to see if it would go away and this morning it looked way worse.

Has anyone seen this before? Anything I can do to help it go away!!!??? Please help, I’m freaking out