“Is local anesthesia safe? ”

Yes

Yes

Local anesthesia is generally very safe.

You will lose the feeling in your butt.

Local anesthesia is usually safe and without complications in proper doses

Local anesthesia, or better said, local anesthetics can be used to provide many types of anesthetics. Local anesthetics can be used to perform nerve blocks that normally will affect a part of the body, it can be used in the spinal or epidural space to numb the lower half of the body, or it can be injected into an area of skin to allow the removal of a lesion in or below the skin. Now, given the information provided, I anticipate that local anesthesia is being used to remove some kind of skin lesion. Local anesthesia is very safe, if used safely. Local anesthetics used incorrectly, for instance, injected into the blood stream, can be lethal. Of course local anesthetics for the most part, are not typically used in the blood stream and as such are very safe and effective. In addition, the patient has to understand that local anesthesia does not mean that a patient will not feel nothing. Local anesthesia is great at blocking pain, but if a patient is an anxious one, then given the fact that they may be aware that they "feel something," may be enough that they may become uncomfortable with what they "feel." In that case, the patient may not be a good candidate for procedures performed with just local anesthesia.
Good luck!

Best,

B. Robles

Yes, it's quite safe

Boris Yaguda M.D.

Yes. Allergic reactions to local anesthetics are extremely rare.