List of plants poisonous to equines. Paterson's Curse has been responsible for the deaths of many horses. Many plants are poisonous to equines; the species vary depending on location, climate, and grazing conditions. In many cases, entire genera are poisonous to equines and include many species spread over several continents.
A number of prescription and over-the-counter medications can interfere with or cause loss of memory. Possible culprits include: antidepressants, antihistamines, anti-anxiety medications, muscle relaxants, tranquilizers, sleeping pills, and pain medications given after surgery. Alcohol, tobacco, or drug use.
1 Alzheimer's disease (AD) is the most common cause of dementia in people over age 65 with cause possibly related to amyloid plaques and neurofibrillary tangles.2  Almost all brain functions, including memory, movement, language, judgment, behavior, and abstract thinking, are eventually affected. Huntington's disease is a heredity disorder caused by a faulty gene. 2  Children of those with the disorder have a 50% chance of getting the disease. 3  Symptoms begin in those 30 to 40 years of age, beginning with personality changes such as anxiety and depression.