It's important to consult with a healthcare provider to get a proper diagnosis and appropriate medical advice. Some potential explanations for the intermittent numbness could include:
Pinched nerve: Compression or irritation of a nerve in your neck, shoulder, or arm could cause temporary numbness. This might happen due to poor posture, repetitive motions, or an underlying medical condition.
Thoracic outlet syndrome: This condition involves compression of nerves and blood vessels as they pass through the thoracic outlet (space between your collarbone and first rib). It can lead to temporary numbness, tingling, or weakness in the arm.
Carpal tunnel syndrome: Although typically associated with the wrist, this condition can sometimes cause symptoms that radiate up the arm, including transient numbness.
Vascular issues: Temporary numbness in the arm can also be related to blood flow problems or circulation issues.
Muscle spasms or tension: Muscle spasms or tension in the neck, shoulder, or arm region can compress nerves and cause momentary numbness.
Systemic causes: In some cases, systemic issues such as vitamin deficiencies, certain medications, or metabolic disorders can lead to temporary numbness.
Other neurological conditions: Some neurological conditions might manifest as temporary numbness or tingling sensations in the arm.
Since your symptoms are recurring, it is essential to get a thorough evaluation by a healthcare professional. They will be able to take your medical history, conduct a physical examination, and possibly order further tests or imaging to identify the underlying cause. Please seek medical attention promptly to ensure appropriate care and avoid any potential complications.