Agitation during mindfulness tickling
This could be the hindrance of Restlessness-worry which accompanies irritable tingling tingling sensations.

This is increased by not giving wise attention to it. That is to look at the sensation with equanimity noting that it arises and passes away.


  There is, bhikshus, the lack of mental calm (cetaso avupasamo). Frequently giving unwise attention
  to them is food for the arising of unarisen restless and worry, and for the growth and abundance of arisen
  restless and worry.
  
  ...
  
  There is, bhikshus, mental calm (cetaso vūpasama). Frequently giving wise attention to them is not
  food for the arising of unarisen restless and worry, nor for the growth and abundance of arisen restless
  and worry.


(Nīvaraṇa Bojjhaṅga) Ahara Sutta

The enlightenment facts to cultivate and not to cultivate are as follows:


  And should cultivate:When the mind is restless it is not the proper time for cultivating the following factors of enlightenment: investigation of the doctrine, energy and rapture, because an agitated mind can hardly be quietened by them.
  
  When the mind is restless, it is the proper time for cultivating the following factors of enlightenment: tranquillity, concentration and equanimity, because an agitated mind can easily be quietened by them.


Aggi Sutta | The Five Mental Hindrances and Their Conquest