I’m not aware of anything other than tatooing.  This can be useful although some of the dyes used for medical tatooing can fade over time.

Fine lines, enlarged pores, acne scars, roughly textured skin, and sun damage can effectively be treated with the Rejuvapen or the Fractional Co2 laser.  Both of these procedures are performed in the office under topical anesthetic.  The procedure takes ~45 minutes to complete.  After treatment, a special skin care product is placed over the areas to aid in healing.  Patients usually may resume their normal activities in 3-5 days.

This is most consistent with a contact allergic dermatitis reaction. You are either allergic to a substance in the lash or the adhesive. The adhesive is more likely the allergen. Contact allergy tests are done by patch testing. The material tested is put on a piece of tape and kept on your skin (usually the back) for at least 2 days. You can perform your own patch test unofficially  by putting the lash on your ankle or other skin area under medical tape or a band-aid for 2 days and see if the reaction occurs. If an adhesive is used separately for your lashes you can self patch that as well. If a self patch test shows a reaction you can find what ingredient is the culprit by more extensive patch testing at an Allergist or Dermatologist.

Sometimes you can make an earlobe bigger -- you need to be seen in person to know what is right to do. 

Yes, you can test for antibodies to the metals. As far as I know though it is not a mainstream test, thus regular doctors will not offer this.