What’s the difference between hives and chronic hives?

What’s the difference between hives and chronic hives?

Chronic hives are different than acute hives:

• Acute hives start to fade within 24 hours (although new hives may replace them). They are gone within six weeks. A recent viral infection often causes acute hives.
• Chronic hives are visible at least twice per week for more than six weeks. Some chronic hives last for months or years. The cause is often unknown.