If a patient is in tachycardia, pale skin and dehydrated, how you diagnose and give treatment to the patient?

Signs and Symptoms of Anaphylactic shock are Sudden difficulty in breathing, Swelling of Face/Lips/Throat, Skin Rash/Itching, Low Blood Pressure and Rapid Pulse.
Signs and Symptoms of Septic shock are High or Low temperature, Fast Heart rate, Low Blood Pressure, Confusion and reduce urine output.
Sign and Symptoms of Cardiogenic shock are Hypotention, Cold clammy skin, Shortness of Breath, Altered mental status and Reduced Urine Output.