All of those are symptoms of heatstroke
He could develop sickness as to a bad cold. His bones will then become fragile.
Answer:
Myasthenia gravis is considered to be an autoimmune disorder. In an autoimmune disease, your immune system mistakes a part of your own body as foreign, resulting in its destruction. In the case of myasthenia gravis, your immune system targets the acetylcholine receptors that your muscles need in order to contract.
Explanation: