Tingling could be caused by many different things. However, most people who say that it feels like bugs crawling under their skin are describing "restless Leg Syndrome". Restless legs syndrome (RLS) is a neurological disorder characterized by unpleasant sensations in the legs and an uncontrollable urge to move them for relief. Individuals affected with the disorder describe the sensations as burning, creeping, tugging, or like insects crawling inside the legs. The sensations range in severity from uncomfortable to irritating to painful.
You say that you also have this feeling in your arms. In Lupus patients, this is sometimes caused by neuropathy. Damage to the nerves can occur in patients with lupus, with or without myositis (muscle inflammation). Most commonly, this is due to inflammation of many of the nerves on both sides of the body, called peripheral neuropathy. This condition can cause damage to the nerves of sensation and/or the nerves that stimulate normal muscle movement.
Neurological symptoms may occur related to your central nervous system, which consists of your brain and spinal cord, or your peripheral nervous system, which links your spinal cord and brain to all other parts of your body. The extensive network of peripheral nerves includes the motor nerves, which help your muscles contract, and the sensory nerves, which allow you to feel a range of sensations. In addition, your peripheral nerves help control some of the involuntary functions of the autonomic nervous system, which regulates your internal organs, sweat glands and blood pressure.
Unfortunately, peripheral nerves are fragile and easily damaged. Damage to a peripheral nerve can interfere with the communication between the area it serves and your brain, affecting your ability to move certain muscles or feel normal sensations. Your symptoms will depend on the cause of your neuropathy and on which nerve or nerves are involved.
If a sensory nerve is damaged, you're likely to experience symptoms that may include:
Loss of feeling
I hope that this information has been helpful to you. Let me know if you need anything more!
Peace and Blessings
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