Under which condition is nursing a sick person (Al-Qiyam bi-Maridh) a valid excuse to miss the congregational prayer?

Excuses for Missing Congregation and Selected Rulings for Followers

• Only if the patient is hospitalized.
• If the patient has no other caretaker or is severely ill and leaving him causes harm/fear.
• Any minor headache of a family member is a valid excuse.
• Nursing is never an excuse.