Bromium (Bromine) is a potent homeopathic remedy focusing intensely on the larynx and trachea. It is crucial in croup and laryngeal diphtheria where membranes spread upward. This remedy often suits scrofulous children with light hair and blue eyes, presenting enlarged, stony hard glands that rarely suppurate. A key modality is aggravation from becoming overheated or being in a warm room. Conversely, many complaints, notably asthma, are ameliorated at sea. Look for spasmodic, suffocative coughs with rattling mucus and a unique sensation of coldness in the larynx during inspiration.