She doesn't have the symptoms of Mareks. And if she had Mareks I would have other sick chickens. She has been like this almost 2 weeks. She is no better or worse. My vet and I are both stumped and I don't want to kill her to find out what she has. If she dies, I will have a necropsy done to determine cause of death. But for right now I am trying supportive care.
Marek's disease is characteristically a disease of young chickens but older birds can also be affected. In contrast to the lymphoid leukosis tumor response, Marek's disease may be observed in more diverse locations.
If it is Marek's it would be this type I think.
The neural type of Marek's is typified by progressive paralysis of the wings, legs and neck. Loss of body weight, anemia, labored respiration and diarrhea are common symptoms. If lesions are present, they are confined to the nerve trunks and plexes enervating the paralyzed extremities. Frequently no gross lesions can be observed.
Acute Marek's disease can be extremely rapid in its course, producing mortality in apparently healthy birds.
I started her on Electrolytes today, long with the Nutri drench and Vit. B Complex.