Collective Insights on Collective Impact. Sponsored and curated by the Collective Impact Forum, Collective Insights on Collective Impact, which appears in Stanford Social Innovation Review's fall issue, shares cutting-edge...
Essential tremor is a neurological disorder that causes the hands, head, trunk, voice, or legs to shake rhythmically. It is often confused with Parkinsonâs disease. The cause of essential tremor is unknown, but for most people who have it, the condition seems to run in their family.
Symptoms. Horses with head shaking problems can either shake their heads horizontally (side to side) or vertically (up and down). The former is often linked to insect irritation or ear problems while the latter may be more indicative of a behavioral problem.