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.
Autoimmune disorders typically cause pain in the area under immune attack as well as constitutional symptoms, such as fever and fatigue. Polymyalgia rheumatica is an example of an autoimmune disorder that can cause leg muscle aches and fatigue. Other symptoms include fever, malaise and unintended weight loss.