A bacterial infection of the vagina can feel a lot like a yeast infection if the vulval area is itchy or painful. Unlike a yeast infection, the discharge can be dark yellow, green, or brown and it won't smell like bread, it can smell like fish or something rotting.
GERD can and does cause upper back burning sensations that can migrate down one side or both sides of the body to the legs. Sometimes pain or symptoms may occur in the chest or sternum area but not always. GERD can also cause a recurring cough and fatigue.
A person with a burning sensation of the extremities usually has irritation or inflammation of the skin, muscles, bones or joints in the arm. Simple extremity injuries such as muscle strains and ligament sprains may cause a burning sensation in the extremities. An infection of the skin called cellulitis can also cause a burning sensation of the extremities. Other important causes include peripheral vascular disease, peripheral neuropathy, diabetic nerve disease, multiple sclerosis, Raynaud's syndrome, drug side effect, disk disease in the neck, and herniated disk in the back.