Can you get free medical help for someone In Nigeria that has malaria?
Theoretically, the Nigerian government should provide basic services, including malaria diagnosis, through primary care clinics which are administered by local government. In addition, Nigeria has recently instituted a National Health Insurance program, which again should assist in providing health care to many sectors of the population. However, in practice, public health care in Nigeria is still hugely underfunded and not very comprehensive—the World Health Organization (WHO) recently ranked it 187 out of 191 country health systems worldwide!
As such, I would be wary of the quality and accuracy of malaria diagnosis and treatment if you obtained it for free in Nigeria—while you might get perfectly decent care, the statistics suggest the chances of this are slim. You would probably be better off looking for a private clinic, where I imagine the cost will still be quite reasonable (especially if you are part of the National Insurance program there) and the quality of care might be more reliable. Having said this, I have no personal direct experience with health care in Nigeria, public or private, so if other readers of this site have other information, please share it in the comments section below.