Pain and tension in the neck, a feeling that your head is going to explode, fear of dying, hot flushes, jumping awake during sleep and occasional inability to swallow are probably all symptoms of some type of anxiety disorder. In this case, the anxiety doesn’t seem to be due to an organic lesion or tumor in the brain because you would be dead by now or the symptoms would progress.

Lack of sexual desire could be due to a depressive disorder. Depression is the most common psychiatric reason for lack of sexual desire. Therefore, it seems likely that the first 2 problems are connected and due to the same reason: anxious-depressive disorder. You can ask for psychiatric help to manage these issues.

About the third problem: it is very hard to tell what is causing the bruises located on the arms and legs combined with joint pain without diagnostic tests. In other words, compete blood analyses (blood count, sedimentation, liver status, kidney status, coagulation status, CRP, RF…) would be necessary to establish a proper diagnosis. And X-ray iamge of the affected joints is also recommended in diagnostic protocol. You can see an internist to follow up with examinations and consultation.