I have it constantly, ten times more severe... and much more painful. I no longer wear denim, it hurts my skin.
So I look up conditions that could cause paresthesia, and there are many- RSD, fibromyalgia, lupus, vitamin B deficiencies, anxiety, I could go on... but I narrowed my search to 'one sided paresthesia', and I came up with this article:
A 48-year-old right-handed female patient with a right aortic arch and history of tetralogy of Fallot repair as a child presented with recent episodes of severe headaches that resolved and episodes of left-sided numbness. On examination, the patient had no neurologic deficit. MR imaging of the brain was performed, which demonstrated tortuous dilated vessels in the right perimesencephalic region and mass effect on the brain stem. Cerebral angiography demonstrated a right proximal PCA dolichoectasia of the P2 segment supplied by a patent P1 segment and posterior communicating artery (Fig 1). Other areas of milder dolichoectasia were present with mild enlargement and tortuosity involving the right intracranial internal carotid artery, basilar artery, and distal right anterior inferior cerebellar artery.