An adult patient surffers from low heart rate, low metabolic rate and low body temperature. He also lacks alertness, intelligence and initiative. What can be this disease? What can be its cause and care?

1. Myxedema is the illness associated with this individual, characterized by a swollen look and diminished alertness.

2. It stems from thyroid gland malfunction, a consequence of severe hypothyroidism or insufficient thyroxine hormone.

3. The condition results in a puffy appearance and reduced alertness in affected patients.