Iziyaluyalu zokukhathazeka zizibonakalisa ngendlela eguquguqukayo kakhulu, kusukela ekuhlaselweni kokwethuka kuya ku-phobia ethize kakhulu, okuhlanganisa nokukhathazeka okujwayelekile futhi okucishe kuhlale njalo, okungathethelelwa nganoma yisiphi isenzakalo.

E-France, i-Haute Autorité de Santé (HAS) ibala izikhungo eziyisithupha zemitholampilo² (Isigaba saseYurophu ICD-10) phakathi kwezinkinga zokukhathazeka:

• inkinga yokukhathazeka ejwayelekile
• ukuphazamiseka kwe-panic noma ngaphandle kwe-agoraphobia,
• ukukhathazeka komphakathi,
• i-phobia ethile (isb. i-phobia of heights noma izicabucabu),
• ukuphazamiseka okukhulu-okucindezelayo
• ukucindezeleka kwangemva kwenhlekelele.

Inguqulo yakamuva kakhulu ye-Diagnostic and Statistical Manual of Mental Disorders, the I-DSM-V, eyanyatheliswa ngo-2014, esetshenziswa kabanzi eNyakatho Melika, ihlongoza ukuhlukanisa izifo ezihlukahlukene zokukhathazeka ngale ndlela elandelayo.³ :

• izinkinga zokukhathazeka,
• i-obsessive-compulsive disorder kanye nezinye izinkinga ezihlobene nayo
• iziyaluyalu ezihlobene nokucindezeleka nokuhlukumezeka

Ngayinye yalezi zigaba ihlanganisa cishe "ama-sub-group" ayishumi. Ngakho-ke, phakathi "kwezinkinga zokukhathazeka", sithola, phakathi kokunye: i-agoraphobia, ukuphazamiseka kokukhathazeka okujwayelekile, i-mutism ekhethiwe, i-social phobia, ukukhathazeka okubangelwa imithi noma izidakamizwa, ama-phobias, njll.