Hello and hope you are doing well.
The skin lesions could be hives. Hives develop in response to an allergic reaction, by the release of histamine. The allergen can be medications, food, extremes of temperature, exercise and viral infections to name a few. Since you developed the outbreak with consumption of beer, the most likely cause would be an allergy to beer. So, therapy lies in avoiding the allergen and anti-histamines. Alternatively an allergy specialist may try to identify the offending allergen and try to desensitize you.
Hope this helped and do keep us posted.
thank you. what is hives? do i need hiv test? i've already done it. i totally stopped drinking. could tension casuative to allergy?