You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Injury to cervical sympathetic trunk produces Horner's syndrome, that includes all, except and explain in detail?
Injury to cervical Symphathetic trunk (which are formed by T1 to T4 fibres of spinal cord) produces Horner's syndrome. It is characterized by
• ptosis (dropping of the upper eyelid)
• miosis (constriction of pupil)
• anhydrosis (loss of sweating)
• enophthalmos (retraction of eye ball)