What Causes Tremors, Sore Tongue And Throat While On Haldol For Dementia?

My mother inlaw has been diagnosed with dementia. She has been placed on Haldol and Aricept along with cymbalta. We are noticing tremors, along with sore tongue and throat. Twisting of her lower legs and trunk. Drawing of her hands into clenches. We are thinking this may be a reaction from the Haldol or possibly Lewy Bodies dementia. Are we on the right track?