Hi and thank you so much for this query. I am so sorry to hear about this hair loss. It would be difficult to tell whether these shots and the diet restrictions caused this. What shots were you using for allergy? Are they steroids? I will need to know the precise name in order to be able to help. Also, are you a male or female? If all these symptoms started after the drugs and dietary measures, then the timeline is suggestive. Give yourself some more time after having stopped these medications to see if there would be any more change as there seems to be no discernible abnormality on blood testing to explain this. I hope this helps. I wish you well. Thank you so much for using our services and do feel free to ask for more information and clarifications if need be.