When you're first diagnosed with the relapsing-remitting form of multiple sclerosis (RRMS), you'll have attacks of symptoms that show up for a few days or weeks. These are called relapses. Then you'll ...

Complexposttraumatic stress disorder (c-PTSD or CPTSD) is a mental health condition that can happen after repeated or prolonged trauma. If you have CPTSD, you might have trouble feeling safe. You may ...

What Is Electromagnetic Hypersensitivity (EHS)? Electromagnetic hypersensitivity (EHS) is a condition in which people have a wide range of symptoms that they believe are caused by exposure to ...

Parkinson’s disease starts in the brain. Certain nerve cells break down or die. As a result, the levels of dopamine, a chemical in your brain, begin to fall. When your dopamine levels decrease, it ...

When diagnosing post-traumatic stress disorder, or PTSD, doctors typically look for three or four key symptoms. Hyperarousal is one of those key symptoms. Hyperarousal is a pervasive mood- and ...

Spasmodic dysphonia (or laryngeal dystonia) is a rare voice disorder that is thought to happen when your brain sends abnormal signals to your vocal folds. It only affects about 1 in 100,000 people.

A small amount of fat in your liver is healthy, but when fat makes up more than 5% of your liver's weight, it can cause problems. At this point, doctors call it steatotic liver disease, although you ...

When you are in the early stage of recovery from opioid use disorder or dependence, there’s a 90% chance that you will experience post-acute withdrawal syndrome, or PAWS. Knowing what to expect and ...

Mast cell activation syndrome is a condition that causes mast cells to release an inappropriate amount of chemicals into your body. This causes allergy symptoms and a wide range of other symptoms.

What Causes a Rash in Your Armpit? An armpit rash is more common than you might think. Your armpits probably come into contact with more chemicals each day than most other parts of your body. Don’t be ...

Kids who take a stimulant medication for ADHD might have times of day when their symptoms flare. Doctors call this a “medication rebound,” or “the arsenic hour,” which happens when your child’s brain ...

What is a Quadriceps Strain? The quadriceps, often shortened and referred to as the quads, are a group of muscles located on the front of the thigh. The quadriceps are actually four different muscles ...