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autoimmune disease & immunodeficiency, insert the photo with the…

- - - - no need to know the exact mechanism,
  - - - what
        
        immune system attacks its own tissues and causes widespread inflammation and tissue damage in the affected organs
        
        presents as fatigue, skin rashes, pain and swelling in the joints
      - Treatment
        
        immunosuppressive drugs that inhibit the activity of the immune system
- - - - Specific example: HIV infections
        
        infects CD4+ cells and causes progressive destruction of these cells
        
        the CD4 cells are initially able to mitigate the immune response, but over time the CD4 cells deplete and hence they cannot fight the virus
        
        from the graph, CD4 cells will never be able to reduce the virus to zero, only to set point
        
        the immune system is not strong enought
        
        this is because the HIV 1 is has an antigenic coat --> meaning that its coat constantly mutates to give different antigens to evade the immune system response