Several medical conditions can make a person feel weak, shaky, and tired. They include dehydration, irregular heart beat, Parkinson's disease, and chronic fatigue syndrome. Treatment will depend on the condition a person has.
Internal vibrations, also known as internal tremors, can feel like a person is shaking on the inside. They typically affect people with Parkinson's disease, multiple sclerosis, or essential tremor. Internal tremors are shaking sensations felt inside the body.
Low blood sugar, dehydration, imbalance in your electrolytes, heart issues, and muscle disease such as Parkinson's disease can cause these symptoms and signs. If your symptoms get worse or don't get better after a few days, check in with your doctor.
Diseases or disorders, such as stroke, multiple sclerosis, traumatic brain injury, or Parkinson's disease. Mercury poisoning from food or the environment. This can cause muscle weakness, tremor, and poor coordination.
Dizziness Can Be a Symptom of an Anxiety Disorder
Your fight or flight instinct kicks in – your fight or flight instinct is often triggered when you feel anxious, as your body prepares for the dangers that you believe are ahead of you. This can lead to a rush of adrenaline, leaving you feeling dizzy and/or lightheaded.
This trembling, shaking or vibrating feeling might affect just the outside of the body, just the inside of the body, or both. This trembling shaking feeling can also switch back and forth randomly and without reason. These anxiety shaking trembling feelings might occur rarely, intermittently, or persistently.
Stress is a common cause of “buzzing” anywhere on or in the body. Some people say they have a “case of the nerves” when they buzz, tremble, shake, or vibrate when nervous, anxious, or stressed. Buzzing anywhere on or in the body is a common indication of anxiety and stress.
When you're feeling anxious, your muscles may become tenser, since anxiety primes your body to react to an environmental “danger.” Your muscles may also twitch, shake, or tremble. Tremors that are caused by anxiety are known as psychogenic tremors.
Anxiety is the activation of your “fight or flight” response to danger, even when no danger is present. The response triggers a rush of adrenaline, which feeds your body with energy and prepares you to flee or fight. It also constricts your blood vessels. All of these can cause your body to start shaking/tremor.
"The term for this is sleep myoclonus, or hypnic myoclonus, and occurs when your brain is shifting from one sleep phase to another.
Paresthesias are a common symptom of fibromyalgia and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Paresthesia is defined as abnormal sensations such as tingling, crawling, itching, numbness, and prickling. Most of the time, paresthesias aren't painful.
The most common reasons for experiencing tremors or shakes when waking up are low blood sugar levels and anxiety. It's hard to know the exact cause without a thorough examination, so you should contact your GP to get checked, as these symptoms could indicate an underlying condition.
“I feel it a lot at night or when I'm lying around for a while,” one MyMSTeam member explained. “I can feel the lower half of my body vibrating like I'm lying on a vibrating bed.” Other members experience their internal tremor as a “slapping” sensation inside the chest, abdomen, back, or limbs.
Low blood sugar (hypoglycemia) can cause hormonal and chemical changes in your body that may make you feel shaky or dizzy in the morning. People with diabetes who take insulin or sulfonylurea drugs have a high risk of low blood sugar. But you don't have to have diabetes to have low blood sugar from time to time.
Smell and Sound Sensitivity
Sometimes, they may also experience light sensitivity. Fibromyalgia causes an extreme response to external stimuli, which include sound, smell, and light. As such, you may experience headaches, dizziness, or nausea when exposed to stimuli that cause a sensory overload.
The symptoms can be similar, but people with fibromyalgia are more likely to experience depression, irritable bowel syndrome, and widespread, persistent pain. Symptoms more common with MS include weakness, vision problems, muscle spasms, and bowel or bladder issues.
What's going on? This body movement is what doctors and scientists call a hypnic (or hypnagogic) or myoclonic jerk. It's also known as a "sleep start," and it can literally startle you out of falling asleep. This type of feeling is normal, and it can happen before people enter the deeper stages of sleep.
Essential tremor is a nervous system condition, also known as a neurological condition, that causes involuntary and rhythmic shaking. It can affect almost any part of the body, but the trembling occurs most often in the hands, especially when doing simple tasks, such as drinking from a glass or tying shoelaces.
Based on its use in many conditions, magnesium sulfate may have therapeutic potential for patients with tremors.