In which of the following conditions is generalized hyperreflexia commonly observed?

The correct answers are A) Neurosis and B) Thyrotoxicosis. Generalized hyperreflexia is often associated with thyrotoxicosis, which is a condition caused by an overactive thyroid gland. Thyrotoxicosis leads to an excess of thyroid hormones in the bloodstream, affecting various systems in the body, including the nervous system. In this condition, the increased levels of thyroid hormones can lead to heightened reflex responses, causing hyperreflexia. This is due to the overstimulation of the nervous system by the excessive thyroid hormones. Neurosis is a psychological condition and can be associated with overstimulation of the nervous system which may be observed as generalized hyperreflexia. The other options listed (Guillain-Barré syndrome, and myasthenia gravis) are not typically associated with generalized hyperreflexia. Guillain-Barré syndrome can lead to changes in reflexes, but hyperreflexia is not a characteristic feature of this condition. Myasthenia gravis typically affects neuromuscular transmission rather than reflexes.