The Hadith..
"Mohammed would hear ringing in his ears; his heart would beat rapidly; his face turn red; his breathing labored; he would fall to the ground or lie down; he would shake; his eyes would open wide; his lips tremble; spit drool from the corners of his mouth; he would sweat profusely; he saw and heard things no one else ever saw or heard; he would sometimes make a snoring noise like that of a camel; and he would be covered with a sheet."
Sound like Mohammed had grand mal seizures.