Welcome to HCM.
Remember, there are many causes of itching.
It may external or internal.
External cause may be irritant or allergen.
Housedust,housedust mite,insects,pollens,grass,wool,perfume,cosmetics,sunrays, water,cool weather or hot weather and so on...
It may be internal..anaemia, thyroid dysfunctions,other endocrinal diseases, DM,HIV,renal diseases,hepatic ddiseases,malignancies, blood diseases,leukamias,
You should consult dermatologist
for perfect diagnosis and treatment.
in tappering dose and anti histaminics might improve the itching..
Local soothing lotion like calamine
with aloe vera
lotion might benefit.
In your case, VDRL test might be false positive, so it has no significance .
I hope you got my answer.
Dr. Ilyas Patel MD