[Concern] I wake up due to skin rashes...ㅠㅠ

There have been almost no skin-related conditions so far.

This month, on the occasion of Teacher's Day, together with my high school mentor.

After eating raw fish and drinking alcohol at the sashimi restaurant, I developed a skin rash.

At first, I thought that something in the sashimi restaurant's food might be causing an allergic reaction.

I thought it would get better after a few days...

It has been about two weeks so far, but the skin rash continues to appear.

The number of occurrences has decreased quite a bit compared to the first time...^^

The skin rash uniquely occurs only on the lower body, such as the thighs and calves.

It is accompanied by itching, lasts for about 30 minutes, and then disappears.

There are also cases that occur during the day, but

Skin rashes appeared on both thighs while sleeping at night, between 1 a.m. and 2 a.m.

I woke up because of itching...ㅠㅠ

I'm really tired and exhausted when I go to work...ㅠㅠ

Should I go to the hospital?

Or should I wait a bit longer for it to get better?

This is the first time I've ever had such an experience, so I'm really flustered...ㅠㅠ