Hi welcome to the health care magic Your work up should be done as follow.... -Blood pressure measurement (first thing to be done) -history regarding allergy and congestion symptoms -previous cardiac history -CBC etc.... If from above work up allergy is the cause (like eosinophila) than fexofenedine drug prescribed For rashes antihistaminic drug might prescribed Your neck rigidity and reflexes should be checked to rule out possiblity of meningitis.... Irregular meal, smoking, hypoglycemia, less sleep, stress like precipitating factor avoided Consult physician for examination Take care