The list of potential side effects listed here from the steroid Trump is taking could affect his ability to govern and likely Pence should take over until he is well because of them

 list of potential serious side effects from the steroid Trump is taking to reduce his Fevers so he doesn't just

stay in a state of Fever hallucinations for days at a time. For this reason, it might be important that Pence be allowed to take over as president because these side effects might severely limit his ability to govern at all.

• 
  
• vision changes,
• swelling,
• rapid weight gain,
• sleep problems (insomnia),
• mood changes,
• acne,
• dry skin,
• thinning skin,
• bruising or discoloration,
• slow wound healing,
• increased sweating,
• headache,
• dizziness,
• spinning sensation,
• nausea,
• stomach pain,
• bloating,
• muscle weakness, or
• changes in the shape or location of body fat (especially in your arms, legs, face, neck, breasts, and waist).