Carbon monoxide poisoning can be fatal, symptoms include headache, dizziness, nausea, and vomiting. Torticollis are spasms of the neck muscles causing neck pain and stiffness, tilted head, and more. Cervical spinal stenosis is a spinal condition causing pain, weakness, or numbness in the arms, legs, or neck.
Symptoms of DTs, which usually peak at 5 days, include: 1  Disorientation, confusion, and severe anxiety. 2  Hallucinations (primarily visual) which cannot be distinguished from reality. 3  Profuse sweating. 4  Seizures. High blood pressure.  Racing and irregular 1  heartbeat. Severe tremors.  Low-grade fever.
One of the symptoms of methadone withdrawal is vomiting. There is a concern that the patient may suffocate on his or her vomit while under the anesthesia. Another concern is that the patient may wake up before the detoxification process is complete and experience the discomfort associated with detox.