Diagnosis is based on appearance and family history. KID<unk>  or keratosis<unk>  spinulosa decalvans have some similar symptoms and must be eliminated.
Ichthyosis follicularis with alopecia and photophobia syndrome
Ichthyosis with confetti
Ichthyosis bullosa of Siemens
Phytophotodermatitis
Hypotrichosis with juvenile macular dystrophy
Steroid rosacea
Lupus miliaris disseminatus faciei
Telangiectasia macularis eruptiva perstans