I think Most of us can relate to some extent, as to the sheer frustration this type of injury can cause! The very first responce to your question (greyowl) is probably the closest Dx and Tx protocol given thus far! "Tennis Elbow" does NOT imply that you must or DO play tennis! It's basically Tendonitis, but more specifically "Lateral epicondylitis." I won't go into the physiology of this injury but it can basically be detected by a very sore and tender elbow (outer portion). If however, your pain is directed more to the inner portion of the elbow (ante cubital fossa), you may have what is referred to as "golfers elbow" or "Medial epicondylitis." Only YOU can determine where your pain is, anatomically speaking! Again, I won't go into the physiology as such BUT many tricep exercises incorporate either pronation or supination of the wrist to some extent (ESPECIALLY SKULLS). This constant Flexion OR Extension of the forearm muscles, can cause either of the two conditions I mentioned! I would venture to say that it IS probably the first, as was mentioned above by greyowl. In any case, you DO need to seek the advice of a medical practioner BUT in the meantime, STOP working you upper body period, as was suggested above (greyowl)! Doing More warm up sets and/or using lighter weight for more reps is counterproductive and you will just be prolonging the inevitable as well as compounding your injury, not to mention the excess cortisol your body will produce to combat your injury. Unfortunately, the only way to completely recovery from this is to keep away from the weights and / or picking up / carrying anything which may aggravate your elbow further. In addition, Using the R.I.C.E. method (rest, ice, compression and elevation) is extremely helpful in reducing pain and swelling. Icing the elbow for 10-15 minutes at a time will decrease the inflammation and swelling and relieve pain. GOOD LUCK! Hey, you could probably do with a well deserved rest now anyway!!!
JD~