HEADACHE: - Headache is a means of forgiveness and reward.
Abu Said al-Khudri (Radiy'Allahu'anhu) that the Prophet (Sallahu'alayhi'wa'salam) said:
صُداعُ المؤمنِ ، أو شوكةٌ يُشاكُها ، أو شيءٌ يُؤذيه ؛ يرفعُه اللهُ بها يومً القيامةٍ درجةً ، ويُكفِّرُ عنه بها ذنوبَه
“The headache that afflicts the believer, or a thorn that pricks him/her, or anything that harms him/her, Allah will raise him/her a degree on the day of resurrection and expiate his/her sins due to it” [Saheeh Targheeb no. 3434]
Also, not having headaches is a bad sign because the people destined to go to the Hell-fire do not have headaches:
Abu Hurairah (Radiy'Allahu'anhu) said: The Prophet (Sallahu'alayhi'wa'salam) said:
: فَهل وجَدْتَ هذا الصُّدَاعَ ؟ . قال : وما الصُّدَاعُ ؟ قال : عِرْقٌ يَضْرِبُ على الإنسانِ في رأسِهِ . قال : وما وجَدْتَ هذا قطُّ ! فلمَّا ولَّى قال النبيُّ صلَّى اللهُ عليهِ وسلَّمَ : مَنْ أحبَّ أنْ ينظرَ إلى رجلٍ من أهلِ النارِ ؛ فَلْيَنْظُرْ إلى هذا
“…Have you ever felt a headache? The man said: What is a headache? He (Sallau'alayhi'wa'salam) said: A vein that beats in the head of a person. The man said: No I have not experienced that ever! The Prophet (Sallahu'alahyhi'wa'salam) said: Whoever would like to see a man from the people of the Hell-fire, then look at this man!”
[Reported in Ibn Hibban and graded Hasan Saheeh by al-Albani in Saheeh Mawaarid no. 580]
Having headaches are a sign of the People of Imaan and the People of Jannah.
Hafidh Ibn Rajab (Rahimahullah) said:
وصداع الرأس من علامات أهل الإيمان وأهل الجنة
“…And headaches are from the signs of the People of Imaan and the People of Jannah..” [Lataaif al-Maa’rif pg. 153]
Then he brings the above Hadith and others.
عَنْ أَبِي الزَّيَّاتِ الْقُشَيْرِيِّ , قَالَ: دَخَلْنَا عَلَى أَبِي الدَّرْدَاءِ نَعُودُهُ , فَدَخَلَ عَلَيْنَا أَعْرَابِيٌّ فَقَالَ: مَا لِأَمِيرِكُمْ؟ وَأَبُو الدَّرْدَاءِ يَوْمَئِذٍ أَمِيرٌ , قُلْنَا هُوَ شَاكٍ قَالَ: وَاللهِ مَا اشْتَكَيْتُ قَطُّ , أَوْ قَالَ: مَا صَدَعْتُ قَطُّ فَقَالَ أَبُو الدَّرْدَاءِ:” أَخْرِجُوهُ عَنِّي لِيَمُتْ بِخَطَايَاهُ , مَا أُحِبُّ أَنَّ لِي بِكُلِّ وَصَبٍ وَصَبْتُهُ حُمْرَ النَّعَمِ , وَإِنَّ وَصَبَ الْمُؤْمِنِ يُكَفِّرُ خَطَايَاهُ
On the authority of Abu Zayyaat al-Qushairi (Rahimahullah) said: “We entered upon Abu Darda (Radiy'Allahu'anhu) to visit him, when a Bedouin entered upon him. So he said: Where is your Ameer? And Abu Darda was the ameer then. So we said: He is complaining of some pain. The man said: I have not complained of anything or he said: I did not experience a headache ever! Abu Darda (Radiy'Allahu'anhu said: Remove him from me, so he dies from his sins. I do not love that for every pain/sickness that I feel that I am given red camels. For verily, the pain/illness of a believer is an expiation for his sins”
[Reported by Bayhaqi in Shuab al-Imaan no. 9436 and the Muhaqiq of the Book Mukhtaar Ahmad Nadwi graded it Jayyid]