Oscar with HITH or Sensory Pits?

I recently rescued an Oscar Saturday night as a last minute decision. A woman on Facebook had contacted me at 10:00pm saying she had an Oscar sitting in a bucket for hours (No air stone or heater ) waiting for someone to come pick it up that never showed. I agreed to take in the Oscar, she drove it down to me and it was not feeling well for the first 24 Hours. Last night I noticed she kinda has craters around her sensory pits.. could this be the start of hole in the head? I’m getting ahold of Some general cure today. I Did a large water change/gravel vacuum. I think this could have been caused by previous bad water conditions, the live feeder fish it was fed and the stress/shock from sitting in the bucket for hours/ new tank environment. I tried to get a decent picture of it’s facial area.

It could be the start of hole in the head disease but you don't need medications yet. Keep the tank clean and add salt. See how it looks after a couple of weeks in clean water.

Do a 75% water change and gravel clean the substrate every day or two for 2 weeks.
Make sure any new water is free of chlorine/ chloramine before it's a dded to the tnak.

Add 2 heaped tablespoons of rock salt for every 20 litres (5 gallons) of tank water. Keep the salt in there for 2 weeks.

When you do the water changes, add salt to the new water before adding it to the tank so the salinity (salt level) in the tank remains stable.

If the pitting is worse in a couple of weeks time, post some more pictures showing the whole fish and a pic of its head.

she doesn’t have any huge craters on her body/head right now but I just wanted to play it safe. Here’s a recent picture from last night. I will post some further pictures after some time as suggested if the advice given doesn’t take. Thank you!