Final answer:
After using steroids, the man's muscles likely grew larger due to increased protein synthesis. Post withdrawal, muscle atrophy occurred due to lack of endogenous steroid production and adrenal suppression. He also has symptoms of adrenal insufficiency, including fatigue, weight loss, hyperpigmentation, and hypotension.
Step-by-step explanation:
Impact of Steroid Use on Muscles:
When the 33-year-old bodybuilder used steroids, they likely caused the muscles to become larger and stronger due to the anabolic effects, which increase protein synthesis and muscle growth. However, when he stopped using steroids, his muscles probably underwent atrophy or loss of muscle mass due to the sudden withdrawal from the high levels of synthetic hormones his body was accustomed to. This effect is compounded by his body's reduced ability to produce natural steroids (cortisol) because of adrenal gland suppression, which is a typical side effect of long-term steroid use.
Effects of Adrenal Insufficiency:
Adrenal insufficiency, or Addison's disease, manifests in this patient through symptoms such as extreme fatigue, weight loss, abdominal pain, hyperpigmentation, low blood pressure (hypotension), and low blood sugar (hypoglycemia). These symptoms are because of the lack of cortisol and other corticosteroids that help regulate metabolism, immune response, and maintain normal electrolyte and water balance.