| Diagnostic criteria for short-lasting unilateral neuralgiform headache attacks |
- At least 20 attacks fulfilling criteria B through D
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- Moderate or severe unilateral head pain, with orbital, supra-orbital, temporal and/or other trigeminal distribution, lasting for 1 to 600 seconds and occurring as single stabs, a series of stabs, or in a sawtooth pattern
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- At least one of the following five cranial autonomic symptoms or signs, ipsilateral to the pain:
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- Conjunctival injection and/or lacrimation
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- Nasal congestion and/or rhinorrhea
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- Eyelid edema
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- Forehead and facial sweating
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- Miosis and/or ptosis
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- Attacks have a frequency of at least one a day
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- Not better accounted for by another ICHD-3 diagnosis
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| Diagnostic criteria for SUNCT |
- Attacks fulfilling criteria for short-lasting unilateral neuralgiform headache attacks
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- Both conjunctival injection and lacrimation (tearing) ipsilateral to the pain
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| Diagnostic criteria for SUNA |
- Attacks fulfilling criteria for short-lasting unilateral neuralgiform headache attacks
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- Not more than one of conjunctival injection or lacrimation (tearing) ipsilateral to the pain
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| Episodic SUNCT or SUNA: |
| Attacks occurring in periods lasting from seven days to one year, separated by pain-free periods lasting at least three months |
| Chronic SUNCT or SUNA: |
| Attacks occurring without a remission period, or with remissions lasting less than three months, for at least one year. |
