When paresthesia worsens but cause defies detection.
D000752:Anemia, Pernicious / Q000150:complications; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000150:complications; D010292:Paresthesia / Q000175:diagnosis / Q000209:etiology*; D013117:Spinal Cord Compression / Q000150:complications; D013167:Spondylitis, Ankylosing / Q000150:complications