If you have sores on a body, then such dream symbolizes the hard feelings you are keeping suppressed from others. Make sure you let them out and do not keep them in. Make sure you pay attention to the part of the body and where the sores where located as it would indicate the situation more clearly, as for example the sores that are located on the area of the chest, shows the worries you are having about something.
Dream dictionary: sores all over body dream meanings
…To dream of your body being covered with blotches, shows that a great fortune will fall to you to have the arms full of sores, shows ill success in business. Lucky lottery dream numbers – 19, 74….
…(Skin disease of domestic animals | Abacterial disease) In a dream, mangy represents pestilence or a plague. If one sees himself struck by such a disease causing him to itch though no puss or malignant festering runs from his sores in the dream, it means that his troubles and adversities are caused by his own progeny or relatives. If one’s body is afflicted with mangy in a dream, it means that his troubles will come from his friends or from his working environment. If it strikes at his right hand or his cheek in a dream, then his adversities will come from his clan. If it strikes at his left hand, then his troubles will come from his business partner or brother. If his illness forms puss in the dream, it means hard earned money that will also cause headache. Such a disease means money for a poor person…
…If one’s eyelids are healthy in his dream and particularly for a women, it indicates positive developments in her life. If one’s eyelids have little skin, or if they are bleared, or if they develop sores in the dream, they represent difficulties, agony, anger, sickness or distress. Eyelids in a dream also represent one’s defenses and protection. They also represent one’s teacher, brothers, sisters, family, wife, children, coffer, veil, guards, confidant or trustees. Eyelids in a dream also mean something to be overlooked. Having bleared eyelids in a dream means being in love. If one’s eyes are interpreted to represent his wealth, then they mean protection, or paying alms tax. If the outer edge of the eyelid turns white in a dream, it means an illness affecting one’s head, eyes or ears. (Also see Body’)…