Seems like this happened suddenly. Looking to correct it simply.
Liposuction will not remove loose skin under the chin. You would probably need a necklift or facelift to remove any excess skin and tighten the neck. Liposuction will remove excess fat and the skin will tighten in younger patients depending on the amount fat removed and the skin elasticity. The older the patient, the less likely this will work. Good luck. Donald R. Nunn MD Atlanta Plastic Surgeon