Weird skin reaction after using Philips Lumea Prestige! Is it serious?

I've used the device in my belly, upper leg and underarms as well, but the worst reaction was on my lower legs. A day after my first treatment, my lower legs got very itchy, and with several bumps in my pores, sometimes with a kind of liquid inside. The second treatment, 2 weeks after the 1st one, it got even worst. My legs are itching way more, I have a lot of bumps, and other parts of my body (where I made the treatment), are getting the same reaction even though is not as severe as my legs.