Hello, In rare cases, people taking hCG have developed blood clots. Although also rare, allergic reactions can occur, including mild skin rashes and severe anaphylactic reactions. It may be a rash due to viral origin or some other allergy. Use tablet levocetrizine twice a day for five days. If symptoms not improved please consult with your physician he will examine and treat you accordingly. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Penchila Prasad Kandikattu , Internal Medicine Specialist