have him checked for Diabetes. Extreme high and lows can cause dizziness and a clammy feeling to the skin. Other symptoms include..excessive thirst, increased urination, sweet smelling urine.
-rrhage
Sudden headache followed by loss of consciousness
Unexpected and really bad.
An earache or pain in the ear, which may be severe, or a sudden decrease in ear pain, followed by ear drainage of clear, bloody, or pus-filled fluid, hearing loss, or ear noise/buzzing.
cramps
-rrage
I would ask your vet but that sounds like Parvo
no
Sudden numbness or weakness of the face, arm, or leg Sudden confusion, trouble speaking or understanding speech Sudden trouble seeing in 1 or both eyes Sudden trouble walking, dizziness, loss of balance. Sudden severe headache with no known cause
perhaps
Negative feedback mechanisms work to prevent sudden severe changes within the body.
maybe a strock, but im not sure