Since you seem to be offline ill leave a response here which we can discuss later on
Well considering the excessive weight loss and the vomiting which you are having, the first thing i would go for is to get an endoscopy done. This will allow us to look at the inner surface of the stomach which can reveal whether or not your have stomach ulcers. These ulcers can be simple gastric ulcers or can be due to an infection by a bacterium which is known as H.pyroli. Once diagnosed this can be treated with the help of simple antibiotics and also by the use of drugs like omeprazole or stronger medications like dexilant. An endoscopy is the test of choice at this point in time. The weakness in the extremities can be due to the dehydration which you must suffer from because of the repeated vomiting.
Now if a stomach cause has been eliminated then we should consider a neurological cause for the vomiting as well as the weakness in the limbs. A MRI of the brain would be necessary to rule out conditions like MS for example. Now this doesnt mean that you have MS just that you should be evaluated for neurological causes if other things are ruled out.
Another thing which can be considered is that you could have autoimmune conditions which can explain the vomiting as well as weakness in the limbs. This would be determined with the help of tests like ANA and ESR followed by specific tests or a complete ENA profile.
Now lastly the rapid weight loss is very concerning, and a malignancy should be considered as well. rapid weight loss should always be investigated aggressively to look for any malignancies. A MRI of the abdomen would be necessary in some cases to rule out the pancreas as a cause as well.
But first of all an endoscopy should be done.
Do you have any more questions?
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