Headaches, backache and other pains, light-headedness, jerks and tremors all occur in totally healthy persons.
像头痛、背痛和其他疼痛、头晕、肌肉抽搐、痉挛性震颤等，都是完全健康者也可能发生的。
2
Slips of the tongue, headaches, backache and other pains, dizziness, light-headedness, numbness, muscle twitches, jerks, cramps, and tremors all occur in totally healthy persons.
像口误（slips of the tongue）、 头痛、背痛和其他疼痛、头晕、肌肉抽搐或抽动、痉挛性震颤等，都是完全健康者也可能发生的。