Hello dear,
Regarding the concern about the sensation of
numbness & shivering, it can be due to:
1. Hypoglycemia- decreased blood glucose level due to severe dieting.
2.
Hypotension (deceased blood pressure)
3. Anemia- due to dietary deficiencies of certain nutrients like Iron, Vitamin B 12,
Folic acid, etc. which interferes with blood formation.
The pulsation felt on the neck can be attributed to hyper dynamic circulatory state due to anemia.
4. Inadequate hydration status & electrolyte balance of the body
5.
Hormonal & metabolic cause
So, kindly consult your Physician & discuss regarding this.
Investigations like
complete blood count, estimation of blood pressure & blood sugar levels will be helpful to rule out any pathological cause for the symptoms.
Wishing you a Good Health.
Thanks & take care.