Amphetamines along with other types of stimulant medications, such as appetite suppressants Anticholinergics and other drugs that can impair sweating Caffeine Menopause Multiple sclerosis Fibromyalgia Diabetes Hypothalamic tumors[1] Methadone treatment Dysautonomia[2] Postural Orthostatic Tachycardia Syndrome (POTS) Sensory Defensiveness/Sensory Processing Disorder