Why does Addisons disease cause skin darkening?

Related questions

1. What is the pathophysiology of Cushing Syndrome?
2. What is the life expectancy of a person with Addison's disease?
3. What causes Cushing Syndrome?
4. How do you test for Addison's disease?
5. What triggers Addison's disease?
6. Is Addison's disease serious?
7. Why does Cushing's cause weight gain?
8. Does caffeine trigger cortisol?
9. What is the most likely cause for Addison disease?
10. Does Addisons disease run in families?

Tags

1. #excess
2. #dermal
3. #caused
4. #hormone
5. #receptor
6. #hyperpigmentation
7. #melanin
8. #stimulant
9. #melanocytes
10. #circulating
11. #levels
12. #surface
13. #adrenocorticotrophic
14. #effect
15. #produce
16. #melanocortin