What you're describing is a little puzzling, since adrenaline usually eases pain, it doesn't make it worse or provoke it. Adrenaline is designed to help you cope better with stress and danger, so what it does is actually make you feel better, more powerful, speedier, more alert, and decreases your ability to feel pain.
How Long Does It Take Aloe Vera to Grow? Aloe vera plant grows within 2 to 3 weeks of initial planting, enough that you begin to see the growth. In the early stages of aloe vera plant growth, use your watering can to keep the soil moist, but be sure to be moderate.
If you want to regrow a broken aloe vera leaf, you can do this easily by drying it until a thin layer of skin grows over the moist sap. If you are in a rush, a few hours will do but if you want the best results, leave it to dry for 3 days. Fill a pot with sandy loam mixture or cactus soil and then insert the broken leaf. Make sure that the damaged side faces down 1/3 of the way into the soil. Water it but just until the soil is a little bit moist. For the first four weeks, keep the soil moist and not soaked while the aloe leaf is transplanting.