4 mo post tickle lipo on inner thighs. Large, hard lump on inner right thigh. Is this normal? Will there be loose skin? (photo)

that doesn't appear to be normal i suggest the proper post operative care and speak to you physician.  Best, Dr. Emer.

saranour,
If the lump didn't resolve until now then it should be drained. It is probably seroma (a fluid collection).It can be done under local anesthesia so you wouldn't feel any major pain. 
I hope this was helpful,
Dr. Daniel BarrettPlastic and Reconstructive SurgeryBeverly Hills, CA

It is extremely uncommon to have a seroma post Tickle Lipo. Honestly, having performed literally thousands of Tickle procedures, I have never seen one. When I did VASER, it would see it on occasion.
With that said, a seroma ( which is a fluid collection of normal body fluid called serous fluid) is not impossible. The fact that you say it is hard makes it less likely unless the overlying skin is taut from excess fluid. Usually seromas are soft and somewhat mushy. 
It wouldn't hurt to attempt to drain it first, but most likely it is not fluid and a persistent change to the tissue secondary to healing process called proliferative healing. In addition, there may just be some asymmetry of fat removal in this area as compared to your left thigh. In that case, a touch up of your Tickle procedure would be in order. 
Last resort would be a steroid injection using Kenalog.

At 4 months post op, yes, I think it's time to drain the lump since it had not resolved on its own. Best of luck.

You probably have a seroma (fluid collection ) and you need to have this drained.   Your doctor is correct.  Drain it.   My Best,  Dr Commons