What causes my arms to fall asleep at night?

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alan avak Posted

What causes my arms to fall asleep at night?

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Mary Ellie

Staying one place for hours without moving your hands

Using one hand to do something, without moving it, for hours can also cause that

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Causes of the arms falling asleep at night
Most people experience occasional, brief episodes of paresthesia.

Often, a person’s position is the cause. For example, the arm may fall asleep because a person is lying in a way that puts pressure on a nerve in the limb.

Cases of positional paresthesia are harmless and generally occur when a nerve is under sustained pressure. The sensation should go away after a person changes positions.

The following medical conditions can also cause paresthesia in the arms:
Carpal tunnel syndrome
Carpal tunnel syndrome is very common. It occurs when activities that involve repetitive finger motion, like typing or playing the piano, put too much pressure on the median nerve. This nerve runs the length of the arm and passes into the hand through the wrist.

The syndrome can cause pain and numbness in the arms and hands, but one of the first symptoms is paresthesia that occurs in the hands and wrists more frequently at night.

According to the Cleveland Clinic, symptoms are likely to occur at night because people often sleep with their wrists bent.

People have a greater risk of carpal tunnel syndrome if they:

  • have a job that involves repetitive hand motions, such as typing or operating machinery
  • are pregnant
  • are retaining fluid


Carpal tunnel syndrome: What you need to know
Carpal tunnel syndrome is a potential cause of arms falling asleep at night. Learn more about carpal tunnel syndrome here.
READ NOW

Diabetes

Diabetes can increase the risk of nerve damage.
People with diabetes have a risk of nerve damage, and the medical term for this complication is diabetic neuropathy.

It occurs when high levels of sugar and fats in the blood injure the nerve endings over time.

Diabetic neuropathy usually causes numbness and tingling in the feet and legs, though it can also affect the arms and hands.

Vitamin B deficiency
Vitamin B deficiencies can cause a variety of problems, including anemia and tingling in the extremities. It can be easy to mistake this tingling sensation for the arms falling asleep.

People at risk for vitamin B deficiencies include:

  • vegetarians and vegans
  • adults over 50 years old
  • people with certain digestive disorders, such as Celiac disease or inflammatory bowel disease (IBD)

Other causes of peripheral neuropathy
Peripheral neuropathy is nerve damage that affects extremities. Diabetic neuropathy is one type.

However, many other factors can cause nerve damage that results in a sensation of the arms, hands, legs, or feet falling asleep.

Other causes of peripheral neuropathy include:

  • some types of injury
  • alcohol use disorder, which was once called alcoholism
  • autoimmune disorders
  • certain medications, such as chemotherapy drugs
  • bone marrow disorders
  • infections, including Lyme disease and HIV
  • tumors that press on certain nerves

Multiple sclerosis
According to the National Multiple Sclerosis Society in the U.S., numbness and tingling are often the first symptoms a person experiences.

These symptoms usually affect the face. However, depending on the location of the spinal lesions that occur with multiple sclerosis, a person may also feel numbness and tingling in the arms or legs.
Stroke

Strokes and transient ischemic attacks can cause numbness and tingling in the arms.

transient ischemic attack occurs when something temporarily blocks blood flow to the brain. The American Heart Association considers these attacks to be “warning strokes.”

Strokes and transient ischemic attacks can affect the functioning of the nerves, and they can cause changes in sensation, including paresthesia in the arms or legs, as well as heightened feelings of numbness or pain.

Prevention

A sleeping position that does not restrict the limbs may prevent parasthesia.
It may be possible to prevent the issues that cause paresthesia in the arms at night.

For example, a person may benefit from learning to sleep in a less restrictive position. If a person is at risk of carpal tunnel syndrome, it may help to wear a brace or do exercises.

If a vitamin B deficiency is causing the sensation of the arms falling asleep, a doctor can prescribe supplements or recommend changes to the diet.
Takeaway and when to see a doctor
It is common for the arms to fall asleep, especially at night, when a person may be lying in a position that places pressure on a nerve.

However, if a person notices this sensation frequently, they may require medical attention, especially if they also experience:

  • visual disturbances
  • facial numbness or tingling
  • difficulty speaking
  • difficulty with coordination, such as while walking
  • unexplained weakness or pain

Anyone who suspects that their paresthesia results from an underlying medical condition, a medication, or alcohol use disorder should speak with a doctor

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Chloe Antares

Check what part of your arm is asleep when you wake up. If it is the whole arm it might be circultation related, you can check this by looking at the color of your hands. If it’s partially asleep, it could be nerve related. If the internal half of your arm + two last fingers (pinky and ring finger) is asleep, then it is possible you slept pressing on your cubital nerve at the height of your elbow. If it’s the other half, then it’s the radial nerve. Try to change the position you sleep in and reduce tension before you sleep (take a bath, meditate, don’t check your screens before you fall asleep, etc). It wouldn’t hurt to build up on potassium either. 

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Bill Hudson

It depend on the position you sleep. Try not to sleep on same position for long hours. One side position for longer duration make the blood circulation get slow due to one side press.

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Edward Branch

Sleeping on one side position for longer may result this, Before going on bed stretch your both hand it brings the body into relax mode.