If you aren't prepared for the awakening, ie your female/masculine energies are not balanced the rising energy can be blocked. The blockage can cause all sorts of symptoms, but in reality they are just shocks to your body from the evolution. The blocked energy shocked my body and forced it to adapt to a path that would lead me to more spiritual enlightenment. For example, I had no idea what kundalini or twin flames were, kissed the person who was/is my twin flame, came down suddenly with every allergy on the planet and now only eat raw foods. I also had to start doing yoga to rebalance my energies and deal with negative trauma, mine and his, in order to remove these blockages.

It's intense!

A good website that helped me understand was: biologyofkundalini.com/

Good luck to you!