Why do I need an ACTH test?You may need this test if you have symptoms of too much or too little cortisol.Symptoms of too much cortisol include:Weight gainBuildup of fat in the shouldersPink or purple stretch marks (lines) on the abdomen, thighs, and/or breastsSkin that bruises easilyIncreased body hairMuscle weaknessFatigueAcneSymptoms of too little cortisol include:Weight lossNausea and vomitingDiarrheaAbdominal painDizzinessDarkening of the skinSalt cravingFatigueYou may also need this test if you have symptoms of hypopituitarism. Symptoms will vary depending on the severity of the disease, but may include the following:Loss of appetiteIrregular menstrual periods and infertility in womenLoss of body and facial hair in menLower sex drive in men and womenSensitivity to coldUrinating more often than usualFatigue
