so going with the second stage dragons are the wild child stage, and to be fair if human teens had that sort of power at their fingertips more than a few probably would be running amok as well, what sort of things could they expect to run into?
Acne: Dragons fortunately do not have hair follicles so the teen bane of acne is not an issue.
They do still have issues with bumps and scrapes forming pus pockets under the scales from the fighting and roughhousing and need to be treated as infections.
Parasitic infections from whatever awakened forms of ticks and mites that may plague dragons are also an issue
Now imagine something that can irritate a dragon landing on a runner, a small swarm of them could probably drain a runner dry pretty fast.
Note: one company did make a dragon-sized flea and tick collar, but they were burnt to the ground shortly thereafter,
Rumour suggests the dragons did it just for suggesting they wear a collar.
Many dragons will have a favourite 'scratching post' somewhere in their lair or nearby to relieve some of the itch. (potential source for biomaterial for talismongering? )
Dragons heal all things over time, but not necessarily quickly. Wounds to their tougher hide take longer to heal (remember at this stage they probably don't have the presence of mind to invoke healing magics adequately).
Interesting note... Wounds and incisions that are oriented cranially-caudally (lined up in the direction from head to tail) heal faster than transverse (side-to-side) ones.
So if slashing a dragon go for across the body slicing rather than along the body line.
Of course, unless your Harlie with Excalibur WTF are you using a sword on a dragon for in the first place?
Voice Cracking: Nothing is more embarrassing than issuing a challenge bellow to another youngling, only to have the roar jump several octaves to a pitch that sends dogs howling.
Some local remedies include popping a dwarf into the mouth and using them like a lozenge, though many find the taste a bit unpleasant.