<s>[INST] I have had various problems following nights out drinking alcohol. I am 39, and have noticed over this last year following nights out I have ended up with very large black bruises on my upper thighs / groin area, and also would have tingly hands arms and lethargy for days after. Do u know what this indicates health wise? [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. According to history you are having frequent bruise over thigh area and it cannot be considered as a normal. As you are having alcohol history traumatic bruise should be ruled out before focusing on other causes. Check your CBC report and especially platelet count should be looked for. Second you can investigate with the basic coagulation profile that include PT, APTT and bleeding time like investigation. If any specific cause found then we can treat it accordingly.  You can consult physician for your examination. Hope I have answered your query. Let me know if I can assist you further. </s>