This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which of the following is an absolute contraindication to adrenal steroid therapy? 
Select and explain. 
A. Severe hypeension, B. Osteoporosis, C. Diabetes mellitus, D. Cushing's syndrome
D: Cushing's syndrome
Answer: D: Cushing's syndrome 
Explanation: Cushing's syndrome is an absolute contraindication to coicosteroid therapy. Relative contraindications includes peptic ulcer, hypeension, hypeension with congestive hea failure, diabetes mellitus, herpes simplex infection, osteoporosis and glaucoma. Ref: Textbook of Pharmacology By Seth 3rd edition page 61