Thanks for asking to healthcaremagic. I understand your concern.
Brief answer:
Hypothyroidism,
anemia,any chronic illness, drugs etc
Detailed answer:
If I am your physician, would like to ask few more information to give a good opinion like
1)What is your sex male or female ?
2)How long have you been experiencing these symptoms ?
3) Were these symptoms present before taking escitalopram?----as the drug itself can cause flu like symptoms,
muscle weakness,
fatigue.
4)Do you have any other associated symptoms ?
Also as your mom also suffers from cold intolerance,it makes me to think of decreased thyroid activity (familial hypothyroidism).
With the information provided here, I would suggest you to get evaluated by your local doctor with basic hemogram, thyroid function test (
TSH level at least) to rule out anemia,hypothyroidism (underactive thyroid) respectively and get treated accordingly.Hope I have answered your query.If any other questions, happy to answer you.Take care.