Alpha Stim side effects.

I've lived with GAD and periodic panic attacks for over 20 years after military service. I could amplify feelings if being 'off color' to panic mode and moving out of my comfort zone even to go on holidays was a problem and my sleeping pattern was poor, generally limited to around 4 hrs. I had been prescribed anti depressants which I couldn't tolerate but eventually found relief with low dose of Zanex 2 times a day when feeling increased anxiety coming on, which mostly occurred around midday or afternoon, I decided to try Alpha Stim after reading research and reviews about the device. After only 2 days use my sleep improved and I have been getting 6-7 hrs for the past week. However, rather than experiencing the feelings of Calm that most AS users describe, I experience a tight scalp/tense feeling. I have been using settings of 1 hour @ 200 and wonder if this is too long and too high current for starters. Does anyone have similar effects or advice please?

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