What symptoms are associated with excess vitamin A?

Excess vitamin A, or hypervitaminosis A, can lead to a variety of health issues, and the symptoms associated with it include headache, nausea, and loss of hair. These symptoms arise because vitamin A plays a crucial role in several bodily functions, including vision, immune function, and skin health. However, when consumed in excessive amounts, it can lead to toxicity.

Headaches are often reported due to increased intracranial pressure which is a direct result of the body's inability to manage the excess vitamin A. Nausea can occur as the body attempts to expel the excess, and loss of hair may be linked to the systemic effects of vitamin A toxicity on cellular metabolism and hair follicle health. Understanding these symptoms can help in the recognition and management of vitamin A toxicity.

Other options, while they may describe symptoms related to various health issues, do not specifically align with the known effects of excess vitamin A. Weight gain and increased appetite, for example, are not typical for vitamin A toxicity and may indicate other metabolic concerns. Blurred vision and dizziness can sometimes occur in other contexts, such as issues with hydration or other nutritional imbalances, but they are not characteristic of vitamin A excess. Similarly, dry mouth and fatigue may relate