Dear Friend, some of our emotional  changes are  caused by imbalance in our body functions. Because our body and mind are always interconnected. In your scenario, you may be having excess heat in your body due to nature of our body or food habits or climate, lifestyle etc. In ayurveda it's called as  aggravated  pita (fire energy). Simple home remedies and few lifestyle routines can help you address this problem, after an evaluation exercise.

Irritability and anger can happen with increased life stress, anxiety, depression and also personality issues and hormonal problems Please provide answers to following questions to better help you - when did you start to notice increase in irritability - is it daily or only for certain period of time - how is your mood generally - sad, nervous, generally happy - how is your sleep, appetite and energy level on most days? - any suspiciousness - any life changes/ stress such as financial, relationship etc - do you drink alcohol or use any drugs - do you have any physical health problems - are you taking any medications?