Pulmonary hypertension is a lung condition in which there is increased pressure in the pulmonary arteries that travel from the heart to the lungs. The most common symptoms are shortness of breath and fatigue. Other more severe symptoms are chest pain, palpitations, and dizziness. There is no cure for the disease, but it can be managed with medication.
either or. The definition of either or is an expression used to indicate that there are only two options or that both of two options are acceptable or equivalent. An example of either or is when you are offered either spaghetti or cereal for dinner and are different between the two so you say either or to indicate that both would work.
10. a position or direction indicated by its location to the side of an object or the observer: on the right hand; on every hand. 11. a contrastive aspect, condition, etc (in the phrases on the one hand, on the other hand). 12. (preceded by an ordinal number) source or origin: a story heard at third hand.