9.Decreased Sense of Smell: Alzheimer’s
It might be an early sign of this or another brain condition, like Parkinson’s or Huntington’s disease, multiple sclerosis, or motor neuron disease. It’s best to catch these conditions early. See a doctor right away if you don’t notice smells as much as you used to or can’t tell one from another. Though it’s hard to treat illnesses that attack the nervous system, your doctor may be able to slow or ease some symptoms.
10.Phantom Smell: Brain Disorder
You may smell something that isn’t there. The aroma could be pleasant or nasty. You might have it in one or both nostrils. It could stick around or come and go. Causes include epileptic seizures, head injuries, brain tumors, or a condition like Parkinson’s disease. See your doctor right away to rule out these conditions.
