Viral hives can come and go, within a few hours or days, and can last up to four weeks. However, there have been cases where viral hives have been seen for as long as 6 weeks, moving them over into the chronic hives category. Viral hives often itch like crazy and can cover more than a small area of the body.
Competent Person: Competent person means one who is capable of identifying existing and predictable hazards in the surroundings or working conditions, which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them.
It is unlikely that you would be qualified without training or experience in rigging gear inspection or as part of a rigger training. In general, a person who has knowledge relative to the situation and authority to take corrective measures will be a competent person under this definition.