When starting a medical treatment, it is important to be **more cautious when driving** due to the effects that some illnesses and medications can have on our abilities to drive safely.

- **Illnesses and medications**: Some illnesses and the medications used to treat them can negatively affect driving ability. For example, they can cause drowsiness, dizziness, lack of concentration, loss of reflexes, and other effects that compromise safety behind the wheel.

- **Advice for drivers with illnesses**: If you have a chronic illness, it is crucial to be well-informed about the illness and the effects of the medications. Additionally, it is recommended to avoid driving when you feel unwell and not to mix alcohol with medications.

- **Dangerous medications**: Some medications, such as analgesics, antitussives, antihistamines, and psychotropic drugs, can cause side effects like drowsiness, vertigo, mood changes, and loss of reflexes, which can be dangerous when driving.

Therefore, when starting a medical treatment, it is essential to be more cautious and always consult with a doctor about the safety of driving under the influence of any medication.