Heart disease (including chest pain, angina, heart attack or any history of cardiovascular event)
High blood pressure
Pheochromocytoma (cancer of the adrenal glands)
Male breast cancer
Acute porphyria (a rare hereditary disease affecting haemoglobin)
Prostate problems (prostate enlargement, prostatitis, prostate cancer)
Any liver disease
Obstructive uropathy (difficulty urinating)