What are some early symptoms of cyanide exposure?

Cyanide is a highly toxic chemical that interferes with the body's ability to use oxygen. Early symptoms of cyanide exposure can include headache and dizziness, as the body struggles to receive and utilize oxygen effectively. These symptoms are often among the first indicators of cyanide poisoning because they relate directly to the impact of hypoxia (lack of oxygen) on the brain and central nervous system.

While other options may suggest various health issues, they do not align with typical symptoms associated with cyanide exposure. For example, severe fatigue and loss of appetite may suggest a different type of illness or deficiency. Joint pain and swelling generally relate to inflammatory or autoimmune conditions rather than poisoning. Skin rash and itching are often responses to allergic reactions or irritants, not cyanide exposure. Therefore, headache and dizziness are the most relevant early symptoms in this context.