Category Nuances for severe_headache:

• severe,
• serious,
• strange,
• graphic,
• unusual,
• prodromal,
• physical,
• acute,
• new,
• dramatic,
• debilitating,
• systemic,
• significant,
• respiratory,
• neurologic,
• initial,
• nervous,
• clinical,
• experienced,
• general,
• adverse,
• degenerative,
• multiple,
• painful,
• unpleasant,
• visible,

Simple Categories for severe_headache:

• concern,
• symptom,
• communication,