"Height dysphoria" is a term of art folks use for different purposes. "Dysphoria" means "unease" or "dissatisfaction" so height dysphoria is nothing more than a term to describe a generalized state of unhappiness about one's height.
The term started appearing in medicine because folks would attempt to justify health care plan coverage for limb lengthening based on a perceived mental health condition they called "height dysphoria".
However, "height dysphoria" in and of itself is NOT a mental health condition. If a person's unhappiness with his or her height begins to unreasonably impair daily activity; then, a diagnosable mental health condition may exist.
However again, that condition would likely be anxiety, or depression, or even obsessive-compulsive disorder, etc. depending on presentation of symptoms. The distinction is that "height unhappiness" is a symptom; not a mental health diagnosis.
When addressing symptoms, it is important to treat the underlying causes that give rise to the symptoms rather than just the symptoms.
Some will say "what underlying cause? My underlying cause is that I am short."
You may be short; however, it is not your height that is causing your unhappiness. Instead, it is how you feel about your height--you feel less powerful, less attractive, less worthy, etc.
Many wrongly conclude that "if only I was 'X' amount taller, then, I would be more powerful, attractive, worthy, etc."
Instead, you should find your power, attractiveness, worth, etc. in the good things that exist about you. Until you do, your height (or hair color, or weight, or acne) will not matter much.