Is it normal to have these "out of the blue anger flashes?"

Ok so for about 2 years I have been on Anti Depressants. I had severe panic attacks and depression. But for the past 4 months or so I haven't had any anxiety issues or depression. I have felt pretty normal. But lately I find myself high strung. The smallest things make me want to throw my chair across the room. I try so hard to be nice to my parents doing chores spending time with them etc. But when they start talking I feel this primal urge to yell and start breaking stuff (I never do by the way I always try to find some way to vent my anger in a healthy manner.) I always want to be left alone, when people talk to me in public I just flat out ignore them. I've even had some pretty nice looking women approach me and ill still walk away. And I have such strange feelings. Like the other day, I love my long hair. I style it and wear it nicely etc. But I just thought "fuck it" I shaved my head bald! After just growing my hair out. I don't know what the hells happening to me please god, someone out there help me. I don't care if your not sure about your answer post it! Believe me. I'm open to suggestions.