My mum was the first to notice I’m 21(f) living at uni with BPD and my mum noticed ever since I was a young child that every so often (3 days out of the week) I go absolutely crackers for like 20 minutes as if I have a HUGE surge of energy. Like I hysterically laugh and become ‘evil’ aka trying to tickle my sister till she cries and annoy anyone in sight. 
Then right after I experience a low because of all the energy used in the last half hour and probably cry or throw a tantrum?! 
Anyone else who has ANYTHING remotely like this please provide some details because I’m at a loss 