In some cases nervous symptoms and delirium supervene.
Accompanying the pain there is more or less of nausea, and when the attack reaches its height vomiting may occur, after which relief comes, especially if sleep supervene.
At this stage collapse may set in, the patient become faint, the limbs twitch, the radical pulse become imperceptible, and unconsciousness supervene.
If the access of oxygen to a protoplast is interfered with its normal respiration soon ceases, but frequently other changes supervene.
==Toxicology== In a few minutes after the introduction of a poisonous dose of aconite, marked symptoms supervene.
When none of these unfavourable conditions supervene it may be seen at nearly any time when the air is clear and the depression of the sun below the horizon more than 20°.
When unfavourable external conditions supervene and the ordinary cells become atrophied, these cells persist and reproduce the plant with the return of more favourable conditions.
Winds supervene from January to March.