Migraine may involve throbbing pain, nausea and sensitivity to light or sound. NHS guidance suggests a diary to identify possible triggers, such as disrupted sleep or missed meals, rather than assuming everyone shares one trigger. Record episodes, their impact and medicines used to support a treatment discussion. Overusing painkillers can worsen headaches, while frequent or worsening attacks may need preventive treatment. A sudden extremely painful headache, one-sided weakness, speech difficulty or confusion requires emergency help. A past migraine diagnosis does not automatically explain new neurological symptoms.