Hydroxyzine (/haÉªËdrÉksáµ»ziËn/) is a first-generation antihistamine of the diphenylmethane and piperazine class. It was first synthesized by Union Chimique Belge in 1956 and was marketed by Pfizer in the United States later the same year, and is still in widespread use today.
One common cause of muscle aches and pain is fibromyalgia, a condition that causes tenderness in your muscles and surrounding soft tissue, sleep difficulties, fatigue, and headaches. The most common causes of muscle aches and pains are: Injury or trauma, including sprains and strains.
Causes. Because research in this area is limited, we arenât certain what causes fatigue, but there are several possible causes. Medical conditions a survivor has, such as heart disease, diabetes, respiratory disease, anemia, pre-stroke fatigue or migraines, can contribute to fatigue.