Rarely: Hives are rarely if ever caused by laundry detergent although may get a contact or irritant dermatitis from it. I often caution people about using fabric softener or anti-static strips which tend to increase the itching. For most cases of hives, oral antihistamine up to 4 doses per day would be the first choice. ...Read more.
Polymyalgia rheumatica is closely related to giant cell arteritis, another inflammatory disorder. Giant cell arteritis is characterized by progressive inflammation of many arteries of the body.
Hi. Polymyalgia rheumatica is not typically hereditary though inherited factors do play a role in the development of the disease. You could get yourself evaluated by a primary care physician or a rheumatologist for your symptoms to arrive at a conclusive diagnosis. Take care.