Please help me find out what it is?(neuropathy or something else)?

My grandpa,few months ago had slight loss of control over his toe of left leg only(no pain,no numbness just loss of control i.e movements are dead but he can feel touch,heat or anythind else).It started slowly upwards to the ankle and now he has lost control over his left leg but has feel.Recently he had some heart trouble like a mild attack without much of his knowledge.recently he also trembled dw times and had tough time when sleeping and also had trouble to breathe at times.His calf of the left leg is loose and cannot tighten or loosen his muscle.Note that his is not a diabetic patient nor with BP etc.,Doctors sugested that he has neuropathy(vasculite,don't if that is the exact term but sure about doctor saying it as neuropathy).He had never had pain of any sort and only left leg is affected.

Neuropathy involves nerves dying. And it's possible your grandpa has it. It also sound like it might be something called "foot drop" in which something causes you to lose control of the foot and you have to drag it along. Sometimes this is caused from being bed bound. If he also has heart trouble, I wouldn't rule out a small stroke or a clot when he had the heart attack. At any rate, a leg brace will help keep his foot in proper alignment. Go back to the doctor and ask for a physical therapist to assess the situation and maybe give your grandpa some needed therapy to get that leg working again and keep it from getting worse.

You trust these people more than your doctor?

Gosh...
I can tell you that Neuropathy is usually found in people living with HIV/AIDS, but that's not necessarily all cases, obviously.
Being that it's your grandpa you should brace yourself to the fact that his body, including his extremities are soon to fail. It's very obvious that your grand has a nerve disfuction, and as the docs probably mentioned that does infact include Neuropathy. Basically your grand is having minute seizures that are centralized in his legs, and yes you should expect them to slowly creep upwards. However remember he's up there in age so again brace yourself. Being that it's a nerve defect and not all out damage he can still "feel" but not control, again this does seem like Neuropathy, but there is a very slight chance that the doctors are just pawning a name off on the old geezer just to satisfy the questions. The big, big, very huge point about Neuropathy is that it is usually found in HIV cases, so why would your grandpa have this? Who knows, there are medical mysteries everyday. Needless to say that Neuropathy is just slight nerve seizures that will progress over time, but can be treated with a medication(s), there are a few of them, but I would recommend NEURONTIN, also known as GABATIN. Ask his doctor about this, there are a few more but the better treatment is listed above.
Goodluck!