<s>[INST] I donated plasma today, I used to do it regularly a few months ago but for some reason today my hands started swelling and I became very light headed and almost fainted. This has never happened before. My hands are still a bit swollen, Should I be concerned? [/INST] Hi Hope this message finds you in good health.I have gone through your complaints and understand your concern.U seem to have generalised weakness and deficiency of vitamins,calcium,minerals proteins and micro-nutrients.Though temporary,it will eventually heal.Take rest and some healthy protein powder.Physiotherapy,analgesics,anti-inflammatory drugs should help.Nothing to worry about.I hope your question has been answered.If you have any follow-up queries,feel free to consult me anytime.Thanks,Take care,God bless. </s>