Check it's eyelids to make sure it's not eat up with parasites. Is it still scouring? Sometimes they'll eat something that doesn't agree with them and it'll cause them to scour. In my pen that'll be buckeye. That usually lasts one day. At 4 months it could very well be Coccidia - coccidious (cox-sa-dia) (I'm way off on my spelling). They are also parasites but worming won't kill them. They need a sulfur based drug. I buy Di-Methox 45% injectable from www.jeffers.com
. It is a 5 day continuous treatment. If you miss a day you start over. The first dose I always give SQ (under the skin) the other 4 I give orally.
You have to bribe a goat to get it to cooperate. I give mine some shelled corn every now and then. It's their cocaine addition. Or you could confine it and try to catch every day. If the eyelids are white to lite pink it could also be worms. (Some of my goats have never had bright bloody red eyelids. They've always been lite pink)For that I use Ivermectin plus injectable. I mainly do that orally. I run the herd through a catch area (with corn for bait) then I close them off. I have a large hard plastic container that I pour a little corn in so they can hear it. I let a couple slip through in the middle, then I contain them and treat them. After that I open the other end so they can get to the corn. Then I repeat the process. Its best not to stare directly at them when you're fixing to grab one. Something about the predator thing. Watch them from the corner of your eye. My confinement area is so small it don't matter if I look - they still gonna get caught.
Hollar if you have any more questions. I've had goats for 8 or 10 years now. I know a good bit about them. Sometimes you just can't save them. I keep a closed herd and line breed. (aka inbreed).