MacBook computer gets very hot and hurts to touch

Question

I have the last 17 inch MacBook made.
Lately my fingers have been burning and very sensitive from using the MacBook.
I thought maybe I had some nerve problems with my fingers but this doesn't happen when I use my iPhone or even an iPad, although I have not tested another MacBook.
I believe the problem gets worse when the computer is plugged in which leads me to believe that it is from the heat of the battery under the trackpad area sometimes my fingers also get heated from using the keyboard.
I have resorted to using an external keyboard and the magic mouse and I have been fine.
After almost 2 weeks of not using the computer keyboard and trackpad I went back to it and within 10 minutes I felt the heat in my fingers.
is there something wrong with my MacBook? is it overheating? I did replace the battery about a half a year ago
Or is it me?

Answer 1

heres is the ac info
Battery Information:
  Model Information:
  Serial Number:          9G32900XWDN5A
  Manufacturer:          DP
  Device Name:          bq20z951
  Pack Lot Code:          0
  PCB Lot Code:          0
  Firmware Version:          301
  Hardware Revision:          1
  Cell Revision:          119
  Charge Information:
  Charge Remaining (mAh):          7351
  Fully Charged:          No
  Charging:          Yes
  Full Charge Capacity (mAh):          12701
  Health Information:
  Cycle Count:          223
  Condition:          Normal
  Battery Installed:          Yes
  Amperage (mA):          4431
  Voltage (mV):          7900
System Power Settings:
  AC Power:
  System Sleep Timer (Minutes):          15
  Disk Sleep Timer (Minutes):          10
  Display Sleep Timer (Minutes):          15
  Wake on AC Change:          No
  Wake on Clamshell Open:          Yes
  Wake on LAN:          Yes
  Current Power Source:          Yes
  Display Sleep Uses Dim:          Yes
  GPUSwitch:          2
  PrioritizeNetworkReachabilityOverSleep:          0
  Battery Power:
  System Sleep Timer (Minutes):          15
  Disk Sleep Timer (Minutes):          10
  Display Sleep Timer (Minutes):          3
  Wake on AC Change:          No
  Wake on Clamshell Open:          Yes
  Display Sleep Uses Dim:          Yes
  GPUSwitch:          2
  Reduce Brightness:          Yes
Hardware Configuration:
  UPS Installed:          No
AC Charger Information:
  Connected:          Yes
  ID:          0x0100
  Wattage (W):          85
  Revision:          0x0000
  Family:          0x00ba
  Serial Number:          0x00aea1ca
  Charging:          Yes
i cant seem to do the test i have restarted my mac 10 times and i have tried holding the d key and option + d key and nothing happens.
what image do you want from istat menu? everything?
i plugged it in and its getting a bit hot now