
ISLAMABAD, PAKISTAN - MAY 6: Two siblings Abdul Rasheed and Shoaib Ahmed (not seen), continuing their daily life during day but collapse into a vegetative state, paralysed and unable to talk, at night, are seen at hospital in Islamabad, Pakistan on May 6, 2016. Reason and cure of illness can't be known. Doctors at a hospital in Islamabad carrying out medical tests to understand the reason behind the brothers' bizarre symptoms. ( Metin Aktas - Anadolu Agency )

ISLAMABAD, PAKISTAN - MAY 6: Two siblings Abdul Rasheed (R) and Shoaib Ahmed (L), continuing their daily life during day but collapse into a vegetative state, paralysed and unable to talk, at night, are seen at hospital in Islamabad, Pakistan on May 6, 2016. Reason and cure of illness can't be known. Doctors at a hospital in Islamabad carrying out medical tests to understand the reason behind the brothers' bizarre symptoms. ( Metin Aktas - Anadolu Agency )

ISLAMABAD, PAKISTAN - MAY 6: Two siblings Abdul Rasheed (L) and Shoaib Ahmed (R), continuing their daily life during day but collapse into a vegetative state, paralysed and unable to talk, at night, are seen at hospital in Islamabad, Pakistan on May 6, 2016. Reason and cure of illness can't be known. Doctors at a hospital in Islamabad carrying out medical tests to understand the reason behind the brothers' bizarre symptoms. ( Metin Aktas - Anadolu Agency )

ISLAMABAD, PAKISTAN - MAY 6: Two siblings Abdul Rasheed (L) and Shoaib Ahmed (R), continuing their daily life during day but collapse into a vegetative state, paralysed and unable to talk, at night, are seen at hospital in Islamabad, Pakistan on May 6, 2016. Reason and cure of illness can't be known. Doctors at a hospital in Islamabad carrying out medical tests to understand the reason behind the brothers' bizarre symptoms. ( Metin Aktas - Anadolu Agency )

ISLAMABAD, PAKISTAN - MAY 6: Two siblings Abdul Rasheed (L) and Shoaib Ahmed (R), continuing their daily life during day but collapse into a vegetative state, paralysed and unable to talk, at night, are seen at hospital in Islamabad, Pakistan on May 6, 2016. Reason and cure of illness can't be known. Doctors at a hospital in Islamabad carrying out medical tests to understand the reason behind the brothers' bizarre symptoms. ( Metin Aktas - Anadolu Agency )

ISLAMABAD, PAKISTAN - MAY 6: Two siblings Abdul Rasheed (L) and Shoaib Ahmed (R), continuing their daily life during day but collapse into a vegetative state, paralysed and unable to talk, at night, are seen at hospital in Islamabad, Pakistan on May 6, 2016. Reason and cure of illness can't be known. Doctors at a hospital in Islamabad carrying out medical tests to understand the reason behind the brothers' bizarre symptoms. ( Metin Aktas - Anadolu Agency )

ISLAMABAD, PAKISTAN - MAY 6: Two siblings Abdul Rasheed (L) and Shoaib Ahmed (R), continuing their daily life during day but collapse into a vegetative state, paralysed and unable to talk, at night, are seen at hospital in Islamabad, Pakistan on May 6, 2016. Reason and cure of illness can't be known. Doctors at a hospital in Islamabad carrying out medical tests to understand the reason behind the brothers' bizarre symptoms. ( Metin Aktas - Anadolu Agency )