All the following medical conditions can cause anxiety in a child EXCEPT

(B). Systemic disorders, hormonal disturbances, and drugs along with carbonated beverage can cause anxiety in children with it is symptoms and signs such as tachycardia e.g. hyperthyroidism, hyperparathyroidism, hypoglycemia, central nervous system disorders (brain tumors), migraine, asthma, lead poisoning, cardiac arrhythmias, and, rarely, pulmonary embolism, systemic lupus erythematosus, anaphylaxis, porphyria or pheochromocytoma. Side effect of anti-asthmatic agents, steroids, sympathomimetics, SSRIs (initiation), anticholinergic agents, and antipsychoties. Other like diet pills, antihistamines, drug withdrawal, and cold medicines can cause anxiety.