Tests failed to reveal any cause for the chest pains and weakness down the left side of his body, which Mr Tobin claimed to be suffering.

BBC: NEWS | UK | Scotland | Glasgow and West | 'Nurse' Pc found Angelika accused

Tension headaches can sometimes be difficult to distinguish from migraines, but unlike some forms of migraine, tension headache usually isn't associated with visual disturbances (blind spots or flashing lights), nausea, vomiting, abdominal pain, weakness or numbness on one side of the body, or slurred speech.

CNN: Tension headache

Messages from the brain to the rest of the body are disrupted, resulting in difficulty moving, muscle weakness and blurred vision.

BBC: Brain scan of MS patient

Symptoms of fungal meningitis can include headache, fever, nausea, stiff neck, new weakness or numbness anywhere in the body, slurred speech, pain or swelling at the injection site and sensitivity to light, according to the CDC.

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