Can sinus congestion cause headaches that can appear anywhere? after a cold i have a headache on the top left side of my head near the back.

The sinuses are : Located above and below the eyes and sinus headache is in the front of the face/forehead .A headache towards the top or back of the head is more associated with routine headache or tension headache.

Headaches and sinus : Sinus congestion usually gives headaches over the involved sinuses and not all over the head. The exception to that rule is the sphenoid sinus which will cause a deep seated headache in the center of the head. Most headaches are not sinus related. This is why i typically get a neurologist involved in the patients that i see for headache after I have cleared the sinuses by exam or ct scan. Good luc.