Finally something I am an expert in.
Tennis Elbow, aka, "epicondylitis", we are old friends.
Mine came from overwork.
I'm a toolmaker, at the time I was working for a large aircraft company and running my own small shop at night and on weekends.
The "exact" motion that puts this condition into overdrive is the motion of screwing in a screw with a screwdriver, and of course, reaching out and turning a door knob.
Anybody who says, "I used to have it", is in for a surprise, once you have had it, it's there, and it will jump in any time you over do it.
I bless my lucky stars that it has never reared its ugly head when I was detecting,
(I have felt a tiny something, but it didn't keep rolling)
I thought about this when this condition cropped up, first in my right elbow, and when I shifted more percent of work to my other arm, my left elbow. At one point I was wearing one of those plastic forearm bands on both arms.
It affected my driving, eating, drinking, combing my hair,....... I think you get it.
Treatment:
1) Always double check with your doctor before following up with advise from anyone.
2) When you experience the discomfort some of us know so well, "ICE" , there are even gel pack type cold packs that are tailored to fit the elbow joint, they secure with Velcro.
Ice the,(I don't know the rules here for swearing), "living daylights" out of the area that the pain is emanating from.
3) An anti inflammatory medication is often prescribed by your doctor, often it is Motrin, (Ibuprofen).
My doctor told me to save my money and use the over the counter Motrin-IB. they are 100mg, the amount the doctor recommends is 400mg. So you take 4 of the Motrin-IB, how often I don't recall, ask your doctor.
4) Rest and non-use are a big part of getting a flare up to "cool down", I mean that, your elbow actually feels "Hot" to the touch.
The reason is the epicondyl tendon is "inflamed", and if you don't stop what you did to bring it on, it will get worse, and worse, and worse.
Note: We are all pretty handy guys here I am guessing so here is the deal.............
The epicondyl tendon runs through a "Sheath" much like a brake cable for a bicycle. Except there is not a lot of clearance, it's a pretty close fit.
Now for a comparison..... You have a dowel pin or a drill blank and a drill bushing or precision ring that is just a very small amount bigger in the bore. The two are such a close fit that when you invert the the pair when mated the pin stays put, you have to use your thumb to move it back and forth.
Now heat the pair while they are assembled, boiling water, leave them in the sun on a hot day, or let you soldering iron have a go at it.
The result, two things, the inner member grew in size as did the ring.
But you see when a ring is heated it expands in all directions, the outside diameter grows and "The inside diameter shrinks".
And the you have the reason for the condition epicondylitis. And how it can become a never ending cycle of discomfort.
Due to over use the tendon becomes inflamed, it gets hot, swollen and grows. This begins to irritate the tendon sheath, it get hot, swollen, and grows, this narrows the sheath which causes friction, the friction causes irritation, the irritation causes inflammation, and round and round we go.
The tendon gets more and more irritated and inflamed, and the sheath does the same, the "Fit" becomes tighter and tighter for lack of a better term, which just causes more swelling, and back around we go.
A doctor may choose to give the offending tendon a cortisone injection, then prescribe an anti inflammatory, and instructions to limit the use to minimum, and apply plenty of ice several times a day.
If you fight this battle once you have to change the way you do things for life.
You have to work smarter not harder.
I know more about this condition, but I think I said enough.
One last thing, this condition can Very Much affect someone that has detecting for a hobby.
.