GO:0038097:   positive regulation of mast cell activation by Fc-epsilon receptor signaling pathway
An Fc-epsilon receptor signaling pathway that results in the change in morphology and behavior of a mast cell resulting from exposure to a cytokine, chemokine, soluble factor, or to (at least in mammals) an antigen which the mast cell has specifically bound via IgE bound to Fc-epsilonRI receptors.