Sympathetic stimulation & consequences like : flaring of diabetes, cardio-vascular effects like tachycardia, increased B.P. ischeamia and myocardial infarction.

Adverse effect on our immune system, so more chance of getting infectious diseases.

Pulmonary complications like atlectasis, infection and pneumonia.

Gastrointestinal side effects like gastric stasis, ileus, nausea, vomiting.

Urinary system complications like retention.

Coagulation abnormality leading thrombotic diseases.

Psychological disturbances like anxiety, depression, thought process abnormality & even suicides.

Acute pain may become chronic pain which is difficult to treat.