To be honest, Trenbolone will always cause the biggest hormone fluctuation. Your body adjusts or gets used to having such high levels of androgens injected exogenously on a daily. Talking about 100mg ED, sometimes I would ramp up to 150 or up to 300 and back down to 100, but never lower than 100. I never ever missed a shot lol, even when i flew to Europe, I take my schedule really seriously, and even have exact days for everything written on my phone. But imagine coming off Tren, your body is like wtf are you doing to me, you aren't supplying me enough, your brain as well got so used to it, it only wants tren lol. I could say I definitely am addicted to tren, and i am trying to stay as far away from that delicious tasty oil. But yea, your hormones go so low, and your body tries to adjust and you get massive break out on random spots you never got before, delts, scalp, lower back. But it's getting slowly better. Tren is a massive dht, and would cause acne to any acne prone individual, if my test wasn't low most of the time, 7-8 months out of 12 in the year, I'd be covered.
For growth though, you NEED test with tren, tren wont make you grow without the proper estrogen levels. And tren wont shed down fat if estro is too high. It works in different ways