[nprateem]

If there's a strong sexual or electrical feeling to the sensation, if it emanates from the base of the spine, moves within (or just in front of) the spine, or in the centre of your head you may want to look into yogic and meditative practices (including KAP).

Perhaps the descriptions in this AYP lesson [1] will resonate with you. I've found their forum very helpful for answering questions.

[1] https://www.aypsite.com/56.html

[throwawake]

That and the details in link indeed resonate with me. This practice helps me focus and relax so that's good enough for me. It goes away when my brain is clogged with thoughts and comes back when I clear everything. I'll have a look at these practices to learn more. Thanks